DNV (Det Norske Veritas) issues type approval and product certificates for marine, offshore and industrial equipment. Listed here: certificates whose holder is in Korea, with product group and expiry date as published by DNV. Source: https://www.dnv.com/ (approval finder, Korea), retrieved 2026-10-13. 794 companies · 2,817 certificates. Companies with a verified profile on this site are linked; the rest appear here only (668).
Certificates expire and get withdrawn — always confirm the current status with the issuing body before relying on it. This list is a starting point for sourcing, not a quality rating.
| Company | Location | Products / scope | Certs | Latest expiry |
|---|---|---|---|---|
| 316STEEL CO., LTD. · | Gimhae-si | Structural Connecting Elements | 1 | 2031-07-19 |
| 3M Korea Ltd. · | Seoul | Termination and Joint for Cable | 1 | 2028-06-29 |
| 911 Ocean Technology Co.,Ltd. · | Busan | Approval of Service Suppliers | 1 | 2028-12-15 |
| A One Engineering & Inspection Co., Ltd. · | Incheon | Approval of Service Suppliers | 1 | 2028-08-20 |
| A Rim Machinery & Engineering Co. · | Yangsan-si | Approved Welding Workshop | 1 | 2028-12-12 |
| ABB Ltd., Korea · | Cheonan | Monitoring System | 1 | 2027-07-07 |
| ACE VALVE CO., LTD | Gimhae-Si, Gimhae-si | Butterfly Valves; Valve for Liquefied Gas | 3 | 2031-09-14 |
| Acoustic Lab. Co. Ltd. · | Incheon | Approval of Service Suppliers | 1 | 2027-05-06 |
| Alfa Laval CorHex Co., Ltd. · | Daejeon | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2029-07-16 |
| ALUKO Co., Ltd. · | Daejeon | Wrought Aluminium and Aluminium Alloys | 1 | 2029-06-30 |
| Argus (Changwon Office) · | Gyeongsangnam-do | Approval of Service Suppliers | 1 | 2028-06-02 |
| Avikus Co., Ltd. · | Seoul | Marine Equipment Directive; Track control system (working at ship’s speed from minimum manoeuvring speed up to 30 knots) | 29 | 2030-12-09 |
| B-I INDUSTRIAL CO., LTD. · | Busan | Fire Alarm Central Unit; Fire Alarm Manual Call Point; Fire Detector; Fixed fire detection and fire alarm systems components for control stations, service spaces, accommodation spaces, cabin balconies, machinery spaces and unattended machinery spaces: Heat detectors – Point detectors; Fixed fire de | 10 | 2031-05-12 |
| BESTMARINTECH · | Gimhae-si | Approved Welding Workshop | 1 | 2028-06-25 |
| Binconet Marine Solutions Co.,Ltd. · | Busan | Peripheral Equipment | 1 | 2027-03-31 |
| BIP Industries Co., Ltd. Goseong · | Goseong-Gun, Goseong-gun | A & B Class divisions fire integrity: A class divisions.; A & B Class divisions fire integrity: B class divisions.; A’ & ’B’ Class divisions fire integrity: - ’A’ class division; A’ & ’B’ Class divisions fire integrity: - ’B’ class division; Fire Doors; Marine Equipment Directive; Surface materials | 59 | 2031-06-16 |
| Bizwaytech Co., Ltd. · | Ulsan | Approved Welding Workshop | 1 | 2027-09-30 |
| BMT Co., Ltd. · | Busan | Ball Valve; Globe Valve; Pipe Couplings, Bite and Compression Type; Valve for Liquefied Gas | 5 | 2029-06-29 |
| BMTECH · | Busan | Electrical Measuring and Protection Relay; Monitoring Relay; Monitoring System | 3 | 2029-10-09 |
| BN STEEL CHEMICAL Co., Ltd. · | Yangsan-Si | Marine Equipment Directive; Primary deck coverings; Surface materials and floor coverings with low flame-spread characteristics: Adhesives used in the construction of “A”, “B” & “C” class divisions | 3 | 2029-01-01 |
| BNS Co. · | Ulsan | Approval of Service Suppliers | 1 | 2029-05-10 |
| Bo Kwang Heat Treatment Co., Ltd. · | Daegu | Heat treatment | 1 | 2028-08-13 |
| Bo Myung Metal Co., Ltd. · | Busan | Wrought Copper and Copper Alloys | 1 | 2028-06-30 |
| Bo Sung Silitech Co., Ltd. · | Gyeyang-Gu | Lightweight Electric Cable; Low Voltage Cable; Switchboard wire | 3 | 2029-10-29 |
| BOKYUNG METAL · | Busan | Steel Castings | 1 | 2029-01-18 |
| Bowon Co., Ltd. · | Yeongam-Gun | Approved Welding Workshop | 1 | 2027-11-30 |
| BUHEUNG CO., LTD. · | Busan | Approved Welding Workshop | 1 | 2028-05-09 |
| BumHan Ind. Co., Ltd. · | Changwon-Si | Air Compressor | 2 | 2027-03-07 |
| Bupyeong Engineering Co., Ltd. · | Gyeongju-Si | Approved Welding Workshop | 1 | 2027-12-31 |
| BY Controls Inc. · | Gimhae-Si | Approved Welding Workshop; Fire Doors; MSA; Safety Valve | 5 | 2029-06-06 |
| Byucksan Corporation (Iksan Plant) · | Iksan-Si | Non-Combustible Material | 1 | 2029-04-07 |
| Byucksan Youngdong Plant · | Yeongdong-Gun | Class A Bulkhead; Horizontal Class B Division; Non-Combustible Material | 4 | 2028-12-21 |
| Cape Industries Ltd. | Yangsan-si | Iron Castings | 1 | 2028-06-30 |
| CASCO Co., Ltd. (Jeongeup Plant) · | Jeongeup-si | Iron Castings | 1 | 2028-07-30 |
| Caskod Co., Ltd. · | Incheon | Iron Castings | 1 | 2027-09-30 |
| Changwon Bending Co., Ltd. · | Gimhae-si | Approved Welding Workshop | 2 | 2029-01-10 |
| Cheil Electric Co., Ltd. · | Busan | Circuit Breaker | 1 | 2030-10-26 |
| CHOSUN WELDING CO., LTD. · | Ulsan | Flux Cored Wire/Gas combination; Metal Cored Wire/Gas combination; Wire/Flux combination; Wire/Flux/Cut Wire/Backing Combination; Wire/Gas combination; Wire/Iron Powder/Flux/Backing combination | 40 | 2030-08-19 |
| CHOSUN WELDING POHANG CO., LTD · | Seoul | Electrode; Wire/Gas combination | 14 | 2028-06-30 |
| Chugoku Samhwa Paints, Ltd. | Gimhae-Si, Gimhae-si | Penetrations through ‘A’ class divisions: - electric cable transits; Protective Coating Systems - Cargo Oil Tanks; Protective Coating Systems - Seawater Ballast Tanks | 10 | 2031-09-12 |
| Consilium Marine Korea · | Busan | Approval of Service Suppliers | 1 | 2028-12-01 |
| CORE Plant Co., Ltd. · | Ulsan | Approved Welding Workshop | 1 | 2028-02-12 |
| CORNELL GLOBAL CO., LTD. · | Yangsan-si | Approved Welding Workshop | 1 | 2029-05-22 |
| COSMO Co., Ltd. · | Busan | Class A Door; Fire Doors; Fire doors; Marine Equipment Directive; Non-combustible materials | 38 | 2031-05-11 |
| COWA ENGINEERING Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2027-07-04 |
| CTC Co., Ltd. · | Pocheon-si | Steel Pipes and Fittings | 1 | 2028-11-02 |
| D-I Industrial Co., Ltd. · | Jinju-Si | Reduction Gear for Propulsion | 3 | 2027-06-30 |
| D.M.C. Co., Ltd. · | Gimhae, Kyungnam | Life-saving appliances | 24 | 2030-01-01 |
| DACC-CSP · | Gimhae-si | Plastic Piping System, Fibre Reinforced Thermosetting | 1 | 2030-08-18 |
| Dae Bang Special Steel Co., Ltd. · | Gimhae-si | Steel Castings | 1 | 2027-07-06 |
| Dae Chang Metal Heat Treatment Eng Co., Ltd. · | Goryeong-gun | Heat treatment | 1 | 2028-07-18 |
| Dae Chang Solution Co., Ltd. Ulju Plant | Ulsan | Steel Castings | 1 | 2028-02-17 |
| Dae Chun Ind. Co., Ltd. · | Gimhae-Si, Gimhae-si | Pipe Support; Steel Pipes and Fittings | 2 | 2030-01-07 |
| Dae Dong Shin Gwan Co., Ltd. · | Busan | Wrought Copper and Copper Alloys | 1 | 2028-10-14 |
| Dae Heung Co., Ltd. · | Geoje-Si | Approved Welding Workshop | 1 | 2027-07-28 |
| Dae Heung Ind. Co., Ltd., (Hallim Factory) · | Gimhae-Si | Steel Forgings | 1 | 2026-12-31 |
| Dae Heung Marine Co., Ltd. · | Yeongam-Gun | Emergency Towing Arrangement | 3 | 2028-01-30 |
| Dae Hwa Engineering Sensor Co., Ltd. · | Gimhae-si | Level Switches | 1 | 2030-03-19 |
| Dae Jin Metal Ind. Co., Ltd. · | Gimhae-Si | Steel Castings | 1 | 2027-07-31 |
| Dae Joong Co., Ltd. · | Goryeong-gun | Iron Castings | 1 | 2028-07-09 |
| Dae Kyung Bend Co., Ltd. | Yangsan-Si | Steel Pipes and Fittings | 1 | 2027-07-30 |
| Dae Kyung Casting Co., Ltd. · | Goryeong-Gun | Iron Castings | 1 | 2026-12-31 |
| Dae Kyung Chemical Inc. · | Gimhae | Marine Equipment Directive; Miscellaneous Fittings for Pressurised Equipment; Surface materials and floor coverings with low flame-spread characteristics: decorative veneers | 8 | 2031-08-04 |
| Dae Kyung Co., Ltd. (Pusan factory) · | Busan | Cranes, gen.; Lifting Gear | 2 | 2030-06-22 |
| Dae Shin Melamine Industrial Co.,Ltd. · | Incheon | Marine Equipment Directive; Surface materials and floor coverings with low flame-spread characteristics: decorative veneers | 2 | 2029-11-19 |
| Dae Shin Metal Co., Ltd. · | Busan | Steel Castings | 1 | 2026-10-31 |
| Dae Won Engineering Co., Ltd. · | Gyeongju-Si | Approved Welding Workshop | 1 | 2027-12-31 |
| Dae Won Heavy Industries Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2028-09-30 |
| Daechun Industrial Co., Ltd. Gijang Branch · | Busan | Steel Pipes and Fittings | 1 | 2028-02-21 |
| Daehyup Spray Co., Ltd. · | Ulsan | A & B Class divisions fire integrity: A class divisions.; Class A Bulkhead; Horizontal Class A Division; Non-Combustible Material; Surface Material of Low Flame Spread | 12 | 2031-05-20 |
| Daehyup Tech Co., Ltd. · | Ulsan | A & B Class divisions fire integrity: A class divisions.; A’ & ’B’ Class divisions fire integrity: - ’A’ class division; Floor Covering; Horizontal Class A Division; Non-Combustible Material; Non-combustible materials; Primary Deck Covering; Primary deck coverings; Surface materials and floor coveri | 25 | 2031-06-18 |
| Daejin Heavy Industry Co., Ltd. · | Changwon-si | Approved Welding Workshop | 1 | 2029-03-10 |
| Daejin SAT Co., Ltd. | ULSAN, Ulsan | Class B Bulkhead; Horizontal Class B Division | 9 | 2031-01-25 |
| Daejoo Heavy Industries Co., Ltd. · | Gongju-Si | Steel Pipes and Fittings | 1 | 2027-12-31 |
| DAELIM MARINE CO., LTD. · | Ulsan | Approval of Service Suppliers | 4 | 2028-07-12 |
| DaeLim Metal Industry Co., Ltd. · | Busan | Steel Castings | 1 | 2027-02-03 |
| Daelim S&P Industries Co., Ltd. · | Goseong-Gun | Approved Welding Workshop | 1 | 2027-09-25 |
| Daemmstoff Industrie Korea Ltd. · | Busan | Fire Protective Systems for Cables; Marine Equipment Directive; Penetrations through "A" class divisions: electric cable transits; Penetrations through ‘A’ class divisions: - electric cable transits; Penetrations through ‘A’ class divisions: - pipe, duct, trunk, etc. penetrations; Pourable Compound | 7 | 2031-06-08 |
| Daerim Machinery Co., Ltd. · | Busan | Pressed Parts | 1 | 2027-10-21 |
| DAESANG OCEAN Co., Ltd. · | Ulsan | Approval of Service Suppliers | 1 | 2028-02-21 |
| DAESHIN METAL MFG, CO., LTD. · | Changwon-si | Aluminium Alloy Castings | 1 | 2029-04-30 |
| Daesun Underwater Development Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2028-08-11 |
| Daewon Engineering Co.,Ltd. · | Gimhae-si | Accommodation Heater | 1 | 2030-10-11 |
| Daewon Heat Treatment Co., Ltd. · | Gimhae | Heat treatment | 1 | 2026-11-23 |
| Daewoo Marine Ind. Co. · | Incheon | Approval of Service Suppliers | 2 | 2027-12-01 |
| Daewoong C.T. · | Busan | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2026-12-31 |
| DAEYANG ELECTRIC CO., LTD. · | Busan | A’ & ’B’ Class divisions fire integrity: - ’B’ class division; Class B Recesses for Light Fittings, Ventilation Units and similar; Control Panel | 4 | 2030-08-10 |
| Daeyang Instrument Co., Ltd. | Busan | Pressure Gauges/Transmitters; Rudder angle indicator; Temperature Gauges/Sensors/Transmitters | 3 | 2031-10-04 |
| DAEYOUNG INTECH CORP · | Geoje-Si, Geoje-si | Jet Fire Protection; Surface Material of Low Flame Spread | 4 | 2030-05-30 |
| Dai Han Anchor Chain MFG Co., Ltd. · | Incheon | MSA | 1 | 2027-03-26 |
| Dai Han Anchor Chain Mfg. Co., Ltd. · | Incheon | Chain Cables | 1 | 2027-06-30 |
| Dai Han Steel Co., Ltd. · | Gimpo-Si | Steel Castings | 1 | 2026-12-31 |
| DASCO Co., Ltd. · | Busan | Heat Exchanger; Manufacture of Welded Pressure Vessels, Class I & II | 2 | 2030-06-24 |
| DECATECH Corporation | Ulsan | Manufacture of Welded Pressure Vessels, Class II | 1 | 2029-06-23 |
| Deok Kwang Heavy Industry Co., Ltd. · | Goseong-Gun | Approved Welding Workshop | 1 | 2026-11-15 |
| DHI Co., Ltd. · | Sacheon-si | Approved Welding Workshop | 1 | 2029-04-19 |
| DHI Tongyeong Factory Co., Ltd. · | Tongyeong-si | Approved Welding Workshop; Manufacture of Welded Pressure Vessels, Class I & II | 2 | 2029-05-07 |
| DHMC Co., Ltd. (JilIye) · | Gimhae | Chain Stopper | 2 | 2027-01-27 |
| DHMC Co., Ltd. (Yeongam Factory) · | Yeongam-gun | Emergency Towing Arrangement | 1 | 2028-01-30 |
| DHMC Co.,Ltd. (Goseong Factory) · | Goseong-Gun | Approved Welding Workshop | 1 | 2027-02-09 |
| DHP Engineering Co., Ltd. | Gimhae-Si | Manufacture of Welded Pressure Vessels, Class II | 1 | 2027-08-24 |
| DIVINGLAB SOLUTION · | Busan | Approval of Service Suppliers | 1 | 2028-08-28 |
| DK Co., Ltd. · | Geoje-si | Approved Welding Workshop | 1 | 2028-03-16 |
| DK Corporation · | Pohang, Pohang-Si | MSA; Rolled Steel Products | 2 | 2028-04-28 |
| DK Engineering Co., Ltd. · | Approved Welding Workshop | 1 | 2027-08-15 | |
| DK Marine Safety Co., Ltd. · | Busan | Approval of Service Suppliers | 3 | 2027-03-31 |
| DK-Lok Corporation | Gimhae-Si, Gimhae-si | Flexible hoses of metallic material with permanently fitted couplings; Pipe Couplings, Bite and Compression Type; Valve for Liquefied Gas | 5 | 2031-02-09 |
| DMI Co., Ltd. · | Jinju-si | Heat treatment | 1 | 2029-08-09 |
| DMI SNT Co., Ltd. · | Ulsan | Approval of Service Suppliers | 3 | 2028-02-26 |
| DNP Co., Ltd. · | Miryang-Si | Fire dampers | 2 | 2027-11-28 |
| Dong Ah Co., Ltd. · | Changwon-si | Heat treatment | 1 | 2028-10-10 |
| Dong Bang Ship Machinery Co., Ltd. · | Changwon-si | Sewage Treatment Plants | 1 | 2030-03-06 |
| Dong Bang Ship Machinery Co., Ltd. (Mieum Factory) · | Busan | Approved Welding Workshop | 1 | 2027-04-03 |
| Dong Chang Casting Co. · | Busan | Iron Castings | 1 | 2027-07-31 |
| DONG EUN PRECISION & ENGINEERING CO., LTD. · | Gimhae-Si, Gimhae-si | Class A and B Penetration | 4 | 2031-01-19 |
| Dong Eun Precision & Engineering Co., Ltd. (Woogye Factory) · | Gimhae | Approved Welding Workshop | 1 | 2029-05-21 |
| Dong Ha Metal Co., Ltd. · | Anseong-Si | Iron Castings | 1 | 2027-01-30 |
| Dong Hee Co., Ltd. · | Goryeong-Gun | Iron Castings | 1 | 2027-01-31 |
| Dong Hwa T.C.A. Co. Ltd. | Yangsan-si | Wrought Copper and Copper Alloys | 1 | 2028-04-28 |
| Dong Jin Metal Co., Ltd. · | Busan | Copper Alloy Castings | 1 | 2027-07-31 |
| Dong Myung Ind. Co., Ltd. · | Changwon-Si | Surface Material of Low Flame Spread | 1 | 2028-09-12 |
| Dong Suh Chemical Ind. Co., Ltd. · | Pohang | Shop Primers | 1 | 2027-11-29 |
| Dong Woo F.G.M. Co., Ltd. · | Busan | Compensator, Bellows of Rubber Material; Flexible Hoses of Non-Metallic Material with Permanently Fitted Couplings | 2 | 2031-02-02 |
| Dong Yang S&T · | Gimhae-Si, Gimhae-si | Compensator, Bellows of Rubber Material; Marine Equipment Directive; Materials other than steel for pipes conveying oil or fuel oil: flexible pipe assemblies and compensators | 4 | 2031-04-15 |
| Dong Yeun Steel Co., Ltd. (Myeongnye Fac.) · | Busan | Steel Pipes and Fittings; Steel hollow sections | 2 | 2028-05-12 |
| Dong-A Bestech Co., Ltd. | Incheon-Si, Incheon-si | Cable Cleats; Cable Gland; Cable Ties; Termination and Joint for Cable | 7 | 2031-04-05 |
| Dong-A Valve Ind. Co. · | Busan | Check Valve | 1 | 2027-10-03 |
| DONGGYEONG COMMERCE & INDUSTRIES CO., LTD. · | Gyeongju | Approved Welding Workshop | 1 | 2028-10-22 |
| Donghae Machinery Co., Ltd. | Kyeongnam | Approved Welding Workshop | 1 | 2029-09-28 |
| DongHwa Entec. Co., Ltd. | Busan | Evaporator; Manufacture of Welded Pressure Vessels, Class I & II | 4 | 2029-05-21 |
| Dongkuk Coated Metal Co. Ltd. · | Busan | Marine Equipment Directive; Surface materials and floor coverings with low flame-spread characteristics: decorative veneers | 2 | 2027-07-03 |
| Dongkuk Steel Mill Co., Ltd. Dangjin Works · | Dangjin-Si, Dangjin-si | MSA; Rolled Steel Products | 2 | 2029-01-08 |
| DONGNAM TS Co., Ltd. · | Busan | Flexible Hoses of Non-Metallic Material with Permanently Fitted Couplings | 2 | 2027-12-31 |
| DongNamKorea Co., Ltd. · | Busan | Steel Pipes and Fittings | 1 | 2026-12-31 |
| Dongsung Advanced Materials Co., Ltd. · | Hwaseong-Si | Glass Fibre Products | 4 | 2028-07-15 |
| DONGSUNG CASTOP CO., LTD. · | Goryeong-gun | Iron Castings | 1 | 2028-10-27 |
| Dongsung Chemical Co., Ltd. | Busan | Adhesive Materials for use in Insulation of Gas Carriers | 1 | 2028-08-28 |
| Dongsung Finetec Co., Ltd. | Anseong-si | Insulation Materials for Gas Carriers | 1 | 2031-03-14 |
| Dongsung finetec Co., Ltd. | Anseong | Insulation Materials for Gas Carriers | 1 | 2029-03-19 |
| Dongsung Finetec Co., Ltd. (Anseong Plant) | Anseong-Si | Insulation Materials for Gas Carriers | 3 | 2029-08-25 |
| DONGSUNG PRECISION IND. CO., LTD. · | Gyeongju | Approved Welding Workshop | 1 | 2028-10-27 |
| DONGWON IND. CO.,LTD. · | Gyeongju | Approved Welding Workshop | 1 | 2029-03-09 |
| Doo Ik Eng. Co., Ltd. · | Busan | Temperature Sensor | 1 | 2028-02-04 |
| Doosan Enerbility Co., Ltd. | Changwon-Si, Changwon-si | MSA; Steel Castings; Steel Forgings | 3 | 2028-12-31 |
| DOOSUNG Co., Ltd. · | Yangsan-Si | Class A Bulkhead; Horizontal Class A Division; Non-Combustible Material | 6 | 2030-01-01 |
| DOOSUNG SHIPS ELECTRONICS CO.,LTD. · | Busan | Approval of Service Suppliers | 2 | 2029-02-24 |
| Doowon High Steel Co.,Ltd. · | Gimhae-si | Steel Pipes and Fittings; Wrought Copper and Copper Alloys | 2 | 2026-12-31 |
| DOWOO INDUSTRY CO., LTD · | Busan | Approved Welding Workshop | 1 | 2027-03-17 |
| DOWOO INDUSTRY CO., LTD. (No.2 Factory) · | Busan | Approved Welding Workshop | 1 | 2027-04-29 |
| DS Industries Co., Ltd. · | Gyeongsangnam-do | Approved Welding Workshop | 1 | 2029-03-08 |
| DS Industry Co., Ltd. · | Changwon-si | Approved Welding Workshop | 1 | 2029-08-07 |
| DSE Co., Ltd. | Gimhae-Si | Approved Welding Workshop | 1 | 2027-03-06 |
| DSR Corp. · | Busan | Offshore mooring fibre rope assemblies | 1 | 2028-03-30 |
| DSR Wire Corp. | Suncheon-si | Steel Wire Ropes | 1 | 2028-08-21 |
| DSR Wire Corp. (Yulchon Factory) · | Suncheon-si | Steel Wire Ropes | 1 | 2029-01-29 |
| Duk Cheon Technology Co., Ltd (Oedong Factory) · | Gyeongju-Si | Approved Welding Workshop | 1 | 2027-05-30 |
| Duon System Co., Ltd. | Gunpo-si | Pressure Transmitter; Temperature Transmitter | 2 | 2030-12-31 |
| DYH Daeyong Co., Ltd. · | Gimhae-si | Approved Welding Workshop | 1 | 2027-09-24 |
| E-Welding Co., Ltd. · | Haman-Gun | Approved Welding Workshop | 1 | 2026-10-31 |
| E.STech Marine Co. · | Busan | Approved Welding Workshop; Class A Door | 3 | 2030-03-04 |
| ECOBLUELAB CO., LTD · | Busan | Approval of Service Suppliers | 1 | 2028-07-14 |
| EEW KHPC Co., Ltd. · | Gwangyang-Si | Approved Welding Workshop | 1 | 2026-10-15 |
| EEW Korea Co.,Ltd. · | Sacheon-Si | Steel hollow sections | 1 | 2027-09-11 |
| EK Heavy Industries Co., Ltd. · | Goseong-Gun | Approved Welding Workshop; Heat treatment | 2 | 2027-12-15 |
| EKM Co., Ltd. · | Gimpo-Si | Heading control system (HCS) | 1 | 2029-01-30 |
| ENCYCLE Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2028-02-14 |
| ENDE Co., Ltd. (Main Factory) · | Busan | Approval of Service Suppliers | 1 | 2028-04-01 |
| ENERGYEN Corporation · | Gunsan-si | Approved Welding Workshop | 1 | 2029-03-20 |
| Engineering Korea Co., Ltd · | Geoje-si | Approval of Service Suppliers | 1 | 2028-06-02 |
| ENK Co., Ltd. · | Busan | Manufacturing of Seamless Gas Bottles and Pressure Vessels Class I and II; Seamless Gas Bottle | 2 | 2028-06-02 |
| ENKEL Engineering Co · | Busan | Approval of Service Suppliers | 1 | 2028-09-19 |
| ERAE FR Co., Ltd. · | Goseong-Gun | Approved Welding Workshop | 1 | 2028-01-26 |
| ESAB CK Corporation · | Changwon-si | Flux Cored Wire; Flux Cored Wire/Gas combination; Wire/Gas combination | 8 | 2031-08-17 |
| ESAB Seah Corp. · | Changwon-Si, Changwon-si | Electrode; Flux Cored Wire; Flux Cored Wire/Gas combination; Metal Cored Wire/Gas combination; Wire/Flux combination; Wire/Gas combination | 75 | 2030-12-31 |
| Eundaseung Co., Ltd. · | Gimhae-si | Approved Welding Workshop | 1 | 2028-05-26 |
| EwonMarine Co., Ltd. · | Yeongam-gun | Approved Welding Workshop | 1 | 2029-03-16 |
| FDC Co., Ltd. · | Gimhae-si | Explosion relief device | 1 | 2029-01-25 |
| Felix Technology Co., Ltd. | Busan | Steel Forgings | 1 | 2027-04-23 |
| Fine Besteel · | Changnyeong-gun | Rolled Steel Products | 1 | 2029-04-30 |
| Fine Engineering Service Co., Ltd. · | Busan | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2028-03-03 |
| FLOWBUS Corporation · | Siheung-Si | Electric Actuator | 1 | 2027-06-22 |
| Flutek Ltd. · | Changwon-si | MSA | 2 | 2030-02-08 |
| FORMETAL CO., LTD. | Seosan-si | Steel Forgings | 1 | 2028-06-15 |
| FT Marine · | Busan | Approval of Service Suppliers | 2 | 2027-06-04 |
| Furuno Korea Co., Ltd. · | Busan | Approval of Service Suppliers | 2 | 2028-06-13 |
| G.S. High-Techer Co., Ltd. · | Miryang-Si, Miryang-si | Pipe Couplings; Vent Head for Tank | 3 | 2029-02-24 |
| Gaha Industries Inc. · | Ulsan | Approved Welding Workshop | 1 | 2028-07-17 |
| GAON CASTEC Co., Ltd. · | Goryeong-gun | Iron Castings | 1 | 2028-11-18 |
| Gastron Co., Ltd. · | Busan | Automatic Gas Detection System; Gas Detector | 2 | 2028-09-03 |
| Geo Rim Engineering Co., Ltd. · | Busan | 5 ppm Bilge Alarm; 5 ppm Bilge Water Separator; Marine Equipment Directive; Oil-content meters; Oil-filtering equipment (for an oil content of the effluent not exceeding 15 p.p.m. | 5 | 2030-06-13 |
| GEUM SAE NDE CO. · | Busan | Approval of Service Suppliers | 1 | 2028-09-22 |
| GEUMGYUNG INNOTECH.CO.,LTD · | ULSAN | Pressed Parts | 1 | 2029-01-25 |
| Ghana Control Eng Co., Ltd. · | Bucheon-Si | Electric Actuator; RPM sensor | 2 | 2028-01-04 |
| GIC Co., Ltd. · | Busan | Draperies, curtains and other suspended textile materials and films; Upholstered furniture: cover material for flame-retardant filling material (tested in specific combination as intended for further application) | 4 | 2028-03-07 |
| Gideon Industrial Co., Ltd. · | Changwon-si | Steel Castings | 1 | 2028-11-09 |
| Gisan Forging Co., Ltd. · | Gimhae-si | Steel Forgings | 1 | 2028-06-30 |
| GLASSO CO., LTD. · | Yeongam-gun | Approved Welding Workshop | 1 | 2028-11-27 |
| Glasso Jig Bank Daebul Place (Factory no.2) · | Yeongam-gun | Approved Welding Workshop | 1 | 2028-11-27 |
| GLOBAL ECHO CO., Ltd · | Ulsan | On board exhaust gas cleaning systems | 5 | |
| Global Shinhwa Co., Ltd. · | Gimhae-Si | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2027-05-29 |
| GNI Solution Co., Ltd. · | Tongyeong-si | Approval of Service Suppliers | 1 | 2028-03-25 |
| Gold Coin Ocean Tech Co., Ltd. · | Ulsan | Approval of Service Suppliers | 1 | 2027-05-01 |
| Gomotec Co., Ltd. · | Busan | Butterfly Valves | 1 | 2029-09-19 |
| Green & Clean Technology Co., Ltd. · | Ulsan | Approved Welding Workshop | 1 | 2028-09-30 |
| GS TECH CO., LTD. · | Jeollanam-do, | Approved Welding Workshop | 1 | 2029-02-04 |
| GSD Marine Corp. · | Busan | Approval of Service Suppliers | 1 | 2029-03-27 |
| GTF Korea Ltd. · | Busan | A & B Class divisions fire integrity: A class divisions.; Marine Equipment Directive; Primary deck coverings; Surface materials and floor coverings with low flame-spread characteristics: floor coverings | 7 | 2030-01-14 |
| GUN WOO PLUS · | Gimhae-Si | Approved Welding Workshop | 1 | 2026-12-17 |
| GUNWOO ENG CO., LTD. · | Busan | Approved Welding Workshop | 1 | 2028-03-06 |
| Hae Gang Hi-Tech Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2029-03-22 |
| Hae Jo Industrial Co., Ltd · | Gimhae-Si | Flexible hoses of metallic material with permanently fitted couplings | 1 | 2029-06-08 |
| Hae Won Special Forging Co., Ltd. · | Gimhae-si | Steel Forgings | 1 | 2028-06-30 |
| Hae Yang Metal Co., Ltd. · | Busan | Copper Alloy Castings | 1 | 2029-04-30 |
| Haean Machinery Ind. Co., Ltd. · | Kimhae-City | Life-saving appliances | 3 | 2030-01-01 |
| Haedong Metal Co., Ltd. · | Busan | Sacrificial Anode Material for Corrosion Protection | 6 | 2030-10-28 |
| Haein Industrial Co. Ltd. · | Busan | Nozzles for deep fat cooking equipment fire extinguishing systems (automatic or manual type) | 1 | 2031-06-14 |
| HAEWON IND. CO., LTD. · | Busan | Wrought Copper and Copper Alloys | 1 | 2027-07-09 |
| Haeyang Underwater Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2026-11-10 |
| Han Chang Engineering Co., Ltd. · | Gimhae-si | Approved Welding Workshop | 1 | 2027-11-29 |
| Han Chang Engineering Co., Ltd. (No.2 Factory) · | Gimhae-si | Approved Welding Workshop | 1 | 2027-11-29 |
| Han Hwang Ind. Co., Ltd. · | Changwon-si | Iron Castings | 1 | 2027-06-30 |
| Han Jeon Metal Co., Ltd. · | Changwon-si | Iron Castings | 1 | 2029-04-30 |
| Han Jo Co., Ltd. · | Busan | Approved Welding Workshop; Metallic Expansion Joints | 2 | 2031-06-11 |
| HAN KOOK FLEXIBLE CO. · | Busan | Approved Welding Workshop; Flexible hoses of metallic material with permanently fitted couplings | 4 | 2029-02-15 |
| HAN SUNG METAL CO. · | Busan | Iron Castings | 1 | 2027-03-21 |
| Han Wool H&P Co., Ltd. | Yangsan-Si | Flexible Hoses for CO2 Systems; Flexible Hoses of Non-Metallic Material with Permanently Fitted Couplings | 2 | 2029-06-30 |
| HANAMARINE SERVICE CO., LTD. · | Busan | Approval of Service Suppliers | 1 | 2029-04-23 |
| HANIL HEAD CO., LTD. · | Busan | Pressed Parts | 1 | 2029-05-07 |
| Hanjin Ind. Co., Ltd. · | Yangsan-Si | Approved Welding Workshop | 1 | 2026-12-07 |
| HANKANG INDUSTRIES CO., LTD. · | Gyeongju | Approved Welding Workshop | 1 | 2028-12-31 |
| Hankook Steel Co., Ltd. (Beopsu Factory) · | Haman-gun | Steel Castings | 1 | 2028-08-31 |
| Hankook Weldtek Co., Ltd. · | Busan | Flux Cored Wire/Gas combination | 10 | 2031-01-26 |
| Hankuk Carbon Co., Ltd. | Miryang-Si, Miryang-si | Insulation Materials for Gas Carriers | 11 | 2031-02-15 |
| Hankuk Miboo Co. Ltd. · | Busan | Approved Welding Workshop; Fire dampers; Weathertight Door | 3 | 2030-07-14 |
| Hanla IMS Co., Ltd. | Busan | Automatic Gas Detection System; Control and Monitoring System; Gas Detector; Gauge Glass Level Indicator; Level Indicator; Loading Computer System; Misc. detector; Miscellaneous Transmitter; Pressure Transmitter | 11 | 2031-11-13 |
| HANS Materials Inc. · | Incheon | Iron Castings | 1 | 2027-08-31 |
| Hans Shipping & Engineering Co. Ltd. · | Busan | Offshore Container | 1 | 2028-01-25 |
| HANSAE CO., LTD. · | Ulsan | Wrought Copper and Copper Alloys | 1 | 2028-06-30 |
| HANSHIN ELECTRONICS CO.,LTD. · | Busan | Approval of Service Suppliers; Automatic Telephone System; Batteryless Telephone System; Miscellaneous Internal Communication Equipment; Public Address and General Alarm System; Public Address and General Alarm Systems (PAGA):- Speakers; Public Address and General Alarm Systems (PAGA):-Control and d | 13 | 2031-02-10 |
| Hansol Gauging Engineering Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2027-02-13 |
| Hansol Oriontech Co., Ltd. | Gimcheon-si | Computers and Programmable Logic Controllers | 1 | 2031-07-28 |
| Hansun Engineering Co., Ltd. | Busan | Class A and B Penetration; Pipe Couplings, Bite and Compression Type; Pipe Couplings, Flared or Welded Nipple Type; Safety Valve | 8 | 2031-05-18 |
| Hanwha Engine Co., Ltd. | Changwon-Si, Changwon-si | Turbocharger | 3 | 2031-06-28 |
| Hanwha Ocean Co., Ltd. | Geoje-Si, Geoje-si | Approval of Service Suppliers; Wind assisted propulsion system | 4 | 2029-09-11 |
| Hanwha Ocean Ecotech Co., Ltd. · | Gwangyang-Si | Approved Welding Workshop | 1 | 2027-04-30 |
| Hanwha Ocean Engineering Co., Ltd. · | Geoje-si | Approval of Service Suppliers | 1 | 2028-06-15 |
| Hanwha Power Systems Co.Ltd. · | Changwon-Si | Gas Compressor | 1 | 2028-04-13 |
| Hanyang Valve Ind. Co., Ltd. · | Busan | Butterfly Valves | 1 | 2030-12-30 |
| Hanyoung Enterprise Ltd. · | Busan | Approval of Service Suppliers | 2 | 2029-05-21 |
| HD Hyundai E&T Co., Ltd. · | Ulsan | Approval of Service Suppliers | 1 | 2027-02-18 |
| HD Hyundai Electric Co., Ltd. · | Cheongju-si | Circuit Breaker | 2 | 2031-04-03 |
| HD Hyundai Electric Co., Ltd. (Cheongju Power Distribution Campus) · | Cheongju-si | Circuit Breaker; Contactor; Contactor Relay; Multifunction Relay; Overcurrent- and Short-Circuit Relay | 19 | 2030-07-21 |
| HD Hyundai Heavy Ind. Co., Ltd. Engine & Machinery Division | Ulsan | Ammonia Engine; Copper Alloy Castings; Diesel Engine; Dual-Fuel Engine (Gas); Dual-Fuel Engine (LFL); Engine Safety, Control and Alarm System; Iron Castings; MSA; Programmable Controller; Turbocharger | 18 | 2031-06-03 |
| HD Hyundai Heavy Industries Co., Ltd | Ulsan | Diesel Engine; Wind assisted propulsion system | 2 | 2029-11-27 |
| HD Hyundai Heavy Industries Co., Ltd. | ULSAN, Ulsan | Approval of Service Suppliers | 2 | 2029-08-17 |
| HD Hyundai Infracore Co., Ltd. · | Incheon | Diesel Engine; MSA | 6 | 2028-06-30 |
| HD Hyundai Marine Solution Co., Ltd. | Ulsan | Bridge Navigational Watch Alarm System (BNWAS); Integrated navigation system (INS); Marine Equipment Directive; Programmable Electronic System | 4 | 2030-03-04 |
| HD-Hyundai Marine Engine Co., Ltd. (Daegu factory) | Daegu | Copper Alloy Castings; Turbocharger | 4 | 2031-02-10 |
| Hee Won Metal Co., Ltd. · | Busan | Iron Castings | 1 | 2027-08-13 |
| Heriana Co., Ltd. · | Busan | Flow Switch; Level Switches; Temperature Sensor | 7 | 2030-08-24 |
| Heung Kuk Steel Wire Co., Ltd. · | Pohang | Flux Cored Wire/Gas combination; Wire/Flux combination | 6 | 2029-11-25 |
| HGTEK Co., Ltd. · | Busan | Monitoring System | 1 | 2028-11-30 |
| Hi Air Korea Co., Ltd. · | Gimhae-Si, Gimhae-si | Approval of Service Suppliers; Fire Damper; General; MSA; Manufacture of Welded Pressure Vessels, Class II | 13 | 2031-01-27 |
| HI STEEL CO., LTD. (Incheon) · | Incheon | Steel hollow sections | 1 | 2027-07-15 |
| HIMET Corporation | Gimpo-si | Steel Castings | 1 | 2029-06-30 |
| Histeel Co., Ltd. | Dangjin-si | Steel Pipes and Fittings | 1 | 2028-12-31 |
| HJ Shipbuilding & Construction | Busan | Approval of Service Suppliers | 1 | 2029-05-15 |
| HLB NETWORKS CO., LTD. · | Ulsan | Approval of Service Suppliers | 1 | 2029-01-22 |
| HLB OCEAN TECH CO.,LTD | Gimhae-si | Approved Welding Workshop | 1 | 2027-10-17 |
| HLBENG CO., LTD. · | Ulsan | Plastic Piping System, Fibre Reinforced Thermosetting | 3 | 2030-06-28 |
| Ho Jin Industrial Co., Ltd. · | Gyeongnam | Approved Welding Workshop | 1 | 2028-02-14 |
| Ho Yeon Co., Ltd. · | Haman-Gun | Approved Welding Workshop | 1 | 2027-02-27 |
| HONEYWELL CO.,LTD | Seoul | Gas Detector; Gas Technical Ancillary Equipment | 3 | 2029-06-30 |
| HongJin Industrial Co., Ltd. · | Gimhae-si | Heat treatment | 1 | 2029-04-19 |
| HS Inc. · | Busan | Class H Penetration; Marine Equipment Directive; Penetrations through "A" class divisions: pipe, duct, trunk, etc penetrations; Penetrations through ‘A’ class divisions: - electric cable transits; Penetrations through ‘A’ class divisions: - pipe, duct, trunk, etc. penetrations | 5 | 2030-10-19 |
| HS KB Valve Co., Ltd. · | Gimhae-Si | Butterfly Valves | 1 | 2028-06-30 |
| HSG Heavy Industries Co., Ltd. · | Changwon-Si, Changwon-si | Approved Welding Workshop | 2 | 2028-03-11 |
| HSG Pearl Shell Co., Ltd. · | Tongyeong-Si | Approved Welding Workshop | 1 | 2027-01-16 |
| HSME Corporation | Busan | Pipe Couplings, Bite and Compression Type | 2 | 2030-03-29 |
| Husteel Co., Ltd. · | Dangjin-Si | Steel Pipes and Fittings | 1 | 2026-12-31 |
| HUSTEEL Co.,Ltd. Daebul Plant · | Yeongam-Gun | Steel Pipes and Fittings | 1 | 2026-12-31 |
| Hwa Sung Co., Ltd. · | Yangsan-si | Marine Equipment Directive; Surface materials and floor coverings with low flame-spread characteristics: - adhesives used in the construction of ’A’. ’B’ & ’C’ class divisions | 2 | 2031-03-03 |
| HWA YOUNG CO., LTD. · | Busan | Engine Control and Alarm System; Engine Safety, Control and Alarm System | 2 | 2028-04-27 |
| Hwacheon Machine Tool Co., Ltd. | Yeonggwang-Gun | Iron Castings | 1 | 2027-11-27 |
| HWAJINPF CO., LTD. | Busan | Steel Pipes and Fittings | 1 | 2027-03-31 |
| Hy-Lok Corporation · | Busan | Ball Valve; Class A and B Penetration; Pipe Couplings, Bite and Compression Type | 5 | 2031-07-25 |
| Hy-Lok Forging Corp. · | Gimhae-si | Steel Forgings | 1 | 2029-01-05 |
| Hyeongwon Industry Co., Ltd. · | Yeongam-Gun | Approved Welding Workshop | 1 | 2027-02-01 |
| Hyolim Industrial Co., Ltd. · | Changwon-Si | Heat treatment | 1 | 2027-12-31 |
| HYOSUNG HEAVY INDUSTRIES CORPORATION | Changwon-Si | Electric Motor | 1 | 2028-06-06 |
| Hyowon NVC Co., Ltd. · | Yangsan-si | Approved Welding Workshop | 1 | 2029-05-28 |
| Hyun Chang Industries Co., Ltd. · | Yangsan-si | Embarkation ladders; Marine Equipment Directive; Pilot ladder | 3 | 2030-10-26 |
| Hyundae Underwater Development Co. · | Busan | Approval of Service Suppliers | 1 | 2026-12-12 |
| HYUNDAI SEASALL CO., LTD. · | Uiwang-Si | Recreational Craft Propulsion Engine | 2 | 2029-12-31 |
| Hyundai Elevator Co., Ltd. | Chungju-Si, Chungju-si | Fire Doors; Fire doors; Marine Equipment Directive | 3 | 2031-03-24 |
| Hyundai Fiber Co., Ltd. · | Yangsan-Si | Non-combustible materials | 1 | 2027-03-08 |
| Hyundai Heavy Ind. Co., Ltd. Engine & Machinery Division | Ulsan | Diesel Engine; Dual-Fuel Engine (Gas); Turbocharger | 5 | 2027-12-31 |
| Hyundai Heavy Industries Power Systems Co., Ltd. | Seongnam-Si, Seongnam-si | On board exhaust gas cleaning systems | 38 | |
| Hyundai Integrated Forging Co., Ltd. · | Suncheon-Si, Suncheon-si | MSA; Steel Forgings; Steelmaking | 3 | 2028-07-14 |
| Hyundai L&C Corporation · | Seoul | Surface materials and floor coverings with low flame-spread characteristics: decorative veneers | 1 | 2029-01-17 |
| Hyundai Materials Corporation Ulsan Plant · | Ulsan | On board exhaust gas cleaning systems | 6 | |
| Hyundai Metal Co., Ind. · | Gimhae-si | Copper Alloy Castings | 1 | 2028-06-30 |
| Hyundai RB Co., Ltd. · | Busan | Steel Pipes and Fittings | 1 | 2029-02-02 |
| Hyundai Samho Heavy Industries Co., Ltd. · | Yeongam-Gun | Approval of Service Suppliers | 1 | 2026-10-23 |
| Hyundai Seasall Co., Ltd. · | Recreational Craft Directive | 1 | ||
| Hyundai Steel Company Dangjin Works (Dangjin) | Dangjin-Si, Dangjin-si | MSA; Steelmaking; Steelmaking and Rolled Steel Products | 5 | 2029-06-27 |
| Hyundai Steel Company Incheon Works (Incheon) | Incheon | Steelmaking and Rolled Steel Products | 1 | 2029-06-30 |
| Hyundai Steel Company Pohang Works | Pohang | MSA; Steelmaking and Rolled Steel Products | 2 | 2029-08-14 |
| Hyundai Steel Pipe Co., Ltd. | Ulsan | Steel Pipes and Fittings | 1 | 2027-12-31 |
| Hyundai Steel Pipe Co., Ltd. (No.2 factory) | Ulsan | Steel Pipes and Fittings | 1 | 2028-09-14 |
| Hyundai Welding Co., Ltd. (Pohang) · | POHANG, Pohang | Electrode; Electrogas; Electroslag; Flux Cored Wire; Flux Cored Wire/Gas combination; Flux Cored Wire/Gas/Backing combination; Metal Cored Wire/Gas combination; Wire/Cut Wire/Flux combination; Wire/Cut Wire/Flux/Backing combination; Wire/Flux combination; Wire/Flux/Cut Wire/Backing Combination; Wire | 155 | 2031-09-11 |
| Hyundai Welding Co., Ltd. Gochang Plant · | Gochang-Gun, Gochang-gun | Flux Cored Wire/Gas combination | 10 | 2031-03-31 |
| HYUP DONG DAE HYEUNG HEAT TREATMENT CO., LTD. | Incheon | Heat treatment | 1 | 2029-05-17 |
| Hyupsung Metallize Co., Ltd. · | Busan | Pumps | 1 | 2028-01-02 |
| I-BADAK Co., Ltd. · | Asan-Si | Marine Equipment Directive; Surface materials and floor coverings with low flame-spread characteristics: floor coverings | 2 | 2029-02-15 |
| I-pass Corporation · | Incheon | Rudder Bearing Bushing Material, Synthetic | 1 | 2028-04-11 |
| Ihsung Tech Co., Ltd. · | Gyeonggi-do | Pipe Couplings, Bite and Compression Type | 1 | 2028-12-31 |
| Il Heung Machine Ind. Co., · | Busan | Approved Welding Workshop | 1 | 2028-05-31 |
| Il Kwang Metal Co., Ltd. | Changwon-si | Copper Alloy Castings | 1 | 2029-08-31 |
| IL SHIN HEAT TREATMENT CO., LTD. · | Busan | Heat treatment | 1 | 2029-02-21 |
| Iljin Machinery Co., Ltd · | Ulsan | Approved Welding Workshop; Heat treatment | 2 | 2028-01-29 |
| ILJIN Steel Corporation | Imsil-gun | Steel Pipes and Fittings | 1 | 2028-12-31 |
| Ilsung Fiber Co. Ltd. · | Yangsan-Si | Rudder Bearing Bushing Material, Synthetic; Stern Tube Bearing Material | 2 | 2028-08-07 |
| ILSUNG MEASUREMENT CO., LTD. · | Busan | Flow Switches; Level Gauges/Transmitters; Level Switches; Misc. detector; Position Switches; Pressure Gauges/Transmitters; RPM sensor; Sensors; Temperature Controller; Temperature Gauges/Sensors/Transmitters | 14 | 2030-03-10 |
| IM UNDERWATER CO.,LTD. · | Busan | Approval of Service Suppliers | 1 | 2029-09-30 |
| In Hwa Precision Co., Ltd. | Changwon-Si | Approved Welding Workshop | 1 | 2028-02-01 |
| ING PLUS CO., LTD. · | Busan | Approved Welding Workshop | 1 | 2028-11-20 |
| INNO STEEL CO., LTD. · | Gimhae-si | Steel Forgings | 1 | 2028-06-30 |
| INSSTEK, Inc. · | Daejeon | General | 1 | 2027-08-29 |
| Inwoo Co., Ltd. | Goseong-Gun | Approved Welding Workshop | 1 | 2027-10-24 |
| IREM Co., Ltd. | Buan-gun | Steel Pipes and Fittings | 1 | 2028-06-20 |
| IS Casting · | Yeongcheon-si | Iron Castings | 1 | 2028-04-29 |
| ITEC Service Co., Ltd. (Ulsan Office) · | Seongnam-si | Approval of Service Suppliers | 1 | 2029-01-01 |
| Jaeil Welding Wire Ind. Co. · | Busan | Flux Cored Wire/Gas combination | 1 | 2027-05-28 |
| JAEUN CORPORATION · | Busan | Approval of Service Suppliers | 2 | 2029-04-23 |
| Jang Sung E.P.S. Co., Ltd. | Haman-Gun | Approved Welding Workshop | 1 | 2028-01-28 |
| Jangin Metal Co., Ltd. · | Siheung-si, | Heat treatment | 1 | 2028-10-22 |
| JBM Co., Ltd. · | ULSAN | Approved Welding Workshop; Horizontal Class A Hatches | 2 | 2028-01-31 |
| Jeil E&S Co., Ltd. | Yangsan-Si | Gaskets and Sealings | 1 | 2029-06-28 |
| Jeil Heat Treatment Co. · | Gimhae-si | Heat treatment | 1 | 2029-09-27 |
| JEIL INDUSTRY · | Busan | Approved Welding Workshop | 1 | 2027-05-28 |
| Jeong Woo Coupling Co., Ltd. · | Gimhae-si | Pipe Couplings | 1 | 2029-06-30 |
| Jeonjin Entech Ltd. | Busan | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2028-07-28 |
| JEONO Co., Ltd. · | Gyeonggi-Do | Cable Cleats; Cable Ties | 3 | 2026-12-31 |
| JHK Inc. · | Gimhae | Approved Welding Workshop | 1 | 2027-07-10 |
| JIN HEUNG FLEXIBLE · | Busan | Flexible hoses of metallic material with permanently fitted couplings | 1 | 2027-05-30 |
| Jin Kwang Co., Ltd. · | Geoje-si | Approved Welding Workshop | 1 | 2028-08-25 |
| Jin Myung Enterprise Co., Ltd. · | Gyeongju | Approved Welding Workshop | 1 | 2028-11-30 |
| JINHU ENGINEERING CO., LTD. · | Busan | Copper Alloy Castings | 1 | 2029-07-13 |
| Jinil Bend Co., Ltd. · | Busan | Steel Pipes and Fittings | 1 | 2027-09-13 |
| Jinsung Precision Metal Co., Ltd. · | Busan | Steel Castings | 1 | 2028-07-10 |
| JINWON HYDRAULIC, INC · | Busan | Approved Welding Workshop | 1 | 2028-03-07 |
| Jinyoung Casting Co. · | Busan | Iron Castings | 1 | 2028-11-30 |
| Jinyoung Metal Co., Ltd. · | Busan | Steel Pipes and Fittings | 1 | 2028-05-28 |
| Jiscorp Co., Ltd. (Changwon Branch) · | Changwon | Approval of Service Suppliers | 1 | 2028-06-02 |
| JK Industry Co., Ltd. · | Busan | Approved Welding Workshop; Manufacture of Welded Pressure Vessels, Class I & II | 2 | 2028-09-30 |
| JKM Co., Ltd. · | Yangsan-si | Steel Castings | 1 | 2028-03-10 |
| JL Heavy Industry Co., Ltd. · | Goseong-Gun, Goseong-gun | Approved Welding Workshop | 2 | 2027-04-23 |
| Johnson Controls International Korea, Inc. · | Busan | CO2 System; Control system for fire extinguishing; Equipment for Fire Protection; Fixed Dry Chemical Fire Extinguishing System; Fixed Water Based Local Application System; Foam Proportioner; Inside Air Foam Fire Extinguishing System; Manufacture of Welded Pressure Vessels, Class I & II | 10 | 2031-03-05 |
| JOIL METAL CO., LTD. · | Paju-si | Copper Alloy Castings | 1 | 2029-01-31 |
| Jokwang I.L.I. Co., Ltd. | Yangsan-si | Safety Valve for Boiler and Pressure Vessel | 4 | 2030-05-27 |
| Jonghap Machinery Co., Ltd. · | Yangsan-si | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2028-08-11 |
| Joong Ang Metal Co., Ltd. · | Iron Castings | 1 | 2028-04-30 | |
| Joong Won Engineering Co., Ltd. · | Busan | Gaskets and Sealings | 1 | 2031-01-07 |
| JoungWoo Industry Co., Ltd. · | Gimhae-Si | Approved Welding Workshop | 1 | 2027-04-17 |
| JOYANG METAL CO.,LTD. · | Gimhae-si | Steel Castings | 1 | 2028-05-25 |
| JSM MARINE CO., LTD. · | Busan | Approval of Service Suppliers | 2 | 2027-07-18 |
| JTS CO., LTD. · | Yeongcheon-Si | Non-combustible materials | 1 | 2028-08-08 |
| Jung Gong Ind. Co., Ltd. | Busan | Window Wipers; Window and Glass Partition | 10 | 2031-07-12 |
| Jung Kwang Industry Co., Ltd. · | Gimhae-Si | Steel Forgings | 1 | 2026-11-30 |
| Jung San Enterprise Co., Ltd. · | Ulsan | Heat treatment | 1 | 2029-07-25 |
| Jung-A Marine Co., Ltd. · | Busan | Approved Welding Workshop; Window Wipers | 3 | 2029-06-14 |
| JUNG-A Marine Co., Ltd. · | Busan | Liferaft launching appliances | 1 | |
| JUNGWOO ENE CO., LTD. · | Busan | Approved Welding Workshop | 1 | 2028-05-08 |
| Juwon Steel Co., Ltd. · | Yeongam-gun | Approved Welding Workshop | 1 | 2029-06-15 |
| K FIVE ENG INC · | Jinju-Si | Approved Welding Workshop | 1 | 2026-11-27 |
| K Shipbuilding Co., Ltd. | Changwon-si | Approval of Service Suppliers | 1 | 2029-09-27 |
| K.C. LTD. · | Busan | Sacrificial Anode Material for Corrosion Protection | 4 | 2031-05-03 |
| Kangha Underwater Company · | Ulsan | Approval of Service Suppliers | 1 | 2027-03-24 |
| Kangnam Jevisco Co., Ltd. · | Haman-Gun, Haman-gun | Insulation Materials for Gas Carriers; Marine Equipment Directive; Protective Coating Systems - Cargo Oil Tanks; Protective Coating Systems - Seawater Ballast Tanks; Shop Primers; Surface materials and floor coverings with low flame-spread characteristics: - paint systems | 10 | 2031-03-13 |
| Kangrim Heavy Ind. Co., Ltd. (Pohang fac.) · | Pohang-Si, Pohang-si | Approved Welding Workshop; Manufacture of Welded Boilers and Welded Pressure Vessels Class I and II | 2 | 2027-12-30 |
| Kangrim Heavy Industries Co.,Ltd. · | Changwon-Si, Changwon-si | Approved Welding Workshop; Control and Monitoring System; Heat treatment; On board exhaust gas cleaning systems | 10 | 2028-10-01 |
| Kangrim Insulation Co., Ltd. · | Busan | Insulation Materials for Gas Carriers | 2 | 2028-07-04 |
| Karam Co., Ltd. · | Changwon-Si | Approved Welding Workshop | 1 | 2027-10-23 |
| KBI Dongyang Steel Pipe Co., Ltd. | Chungju-si | Steel Pipes and Fittings | 1 | 2028-12-31 |
| KCC Corporation Ltd. Gimcheon Plant · | Gimcheon | Class A Bulkhead; Class A and B Penetration; Class H Fire Wall and Bulkhead; Class H Lightweight Horizontal Partition and Deck; Horizontal Class A Division; Non-Combustible Material; Surface Material of Low Flame Spread | 37 | 2031-06-17 |
| KCC Corporation, Jeonju 2nd Plant · | Wanju_Gun | Marine Equipment Directive; Surface materials and floor coverings with low flame-spread characteristics: - paint systems | 3 | 2031-01-07 |
| KCC Corporation, Moonmak Plant · | Wonju-Si | Non-Combustible Material | 2 | 2028-12-10 |
| KCC Corporation, Ulsan Plant · | Ulsan | Adhesive Materials for use in Insulation of Gas Carriers; Anti-Fouling Systems; Insulation Materials for Gas Carriers; Marine Equipment Directive; Protective Coating Systems - Cargo Oil Tanks; Protective Coating Systems - Seawater Ballast Tanks; Shop Primers; Surface materials and floor coverings wi | 73 | 2031-10-12 |
| Keon Sae High Pressure Co., Ltd. · | Yangsan-Si | Steel Forgings | 1 | 2027-08-20 |
| Keum Hwa Co., Ltd. · | Geoje-si | Approved Welding Workshop | 1 | 2028-03-31 |
| KEYSTONE VALVE(KOREA) LLC. · | Anseong-Si | Butterfly Valves; MSA | 2 | 2029-06-29 |
| KG. Heavy Industries Co., Ltd. · | Haman-Gun | Approved Welding Workshop | 1 | 2026-12-03 |
| Kiswel Ltd. (Changwon) · | Changwon-Si, Changwon-si | Electrogas; Flux Cored Wire/Gas combination; Flux Cored Wire/Gas/Backing combination; Wire/Cut Wire/Flux/Backing combination; Wire/Flux combination; Wire/Gas combination | 68 | 2031-06-30 |
| Kiswel Ltd. Busan Plant · | Busan | Electrode | 17 | 2031-08-07 |
| Kiswire Co., Ltd. (Gunbuk Factory) · | - | Steel Wire Ropes | 1 | 2029-04-30 |
| Kiswire Ltd. | Busan | Steel Wire Ropes | 1 | 2029-03-04 |
| KJ Engineering Co., Ltd. · | Busan | Approval of Service Suppliers | 2 | 2027-08-22 |
| KJ HEAT TREATMENT CO., LTD. · | Busan | Heat treatment | 1 | 2029-05-31 |
| KJ Radio Co., Ltd. · | Busan | Approval of Service Suppliers | 2 | 2028-02-23 |
| KME Co., Ltd. · | Busan | Conduit, Fitting, Cable Pipe, Box, Etc. | 1 | 2027-04-14 |
| KmsEmec Co., Ltd. | Miryang-Si | Approved Welding Workshop; Plastic Piping System, Fibre Reinforced Thermosetting | 3 | 2029-11-03 |
| KmsEmec Co., Ltd. (Daebul Branch) · | Yeongam-gun | Approved Welding Workshop | 1 | 2028-08-22 |
| KNDE Co., Ltd. (Busan Branch) · | Busan | Approval of Service Suppliers | 1 | 2028-09-07 |
| KOBELCO WELDING OF KOREA CO., LTD. · | Changwon-Si | Electrogas; Flux Cored Wire/Gas combination | 19 | 2029-08-12 |
| Koman Hydraulic Co., Ltd. | Changwon-si | Flexible Hoses of Non-Metallic Material with Permanently Fitted Couplings | 1 | 2030-03-01 |
| KOMATEC LLC · | Busan | Approval of Service Suppliers | 1 | 2027-03-06 |
| Kongsberg Maritime Korea Ltd. Busan | Busan | Approval of Service Suppliers | 1 | 2028-12-11 |
| KOPICO CO., LTD. · | Haman-Gun | Approved Welding Workshop | 1 | 2027-05-06 |
| KOREA COMMERCIAL DIVERS CO.,LTD. · | Busan | Approval of Service Suppliers | 1 | 2028-01-06 |
| KOREA DIVING · | Busan | Approval of Service Suppliers | 1 | 2026-12-13 |
| Korea EST Co., Ltd. · | Ulsan | Marine Equipment Directive; Surface materials and floor coverings with low flame-spread characteristics: pipe insulation covers | 4 | 2029-03-27 |
| Korea Filter Co., Ltd. · | Yangsan-si | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2029-01-31 |
| Korea Gauging Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2029-07-22 |
| Korea K Valve Corp. | Anseong-si | Butterfly Valves | 5 | 2030-11-03 |
| KOREA LOSTWAX CO.,LTD | Siheung-si | Steel Castings | 1 | 2028-12-31 |
| Korea Marine Equipment Research Institute · | Busan | Approval of Service Suppliers | 1 | 2027-07-01 |
| KOREA METAL · | Gyeongju-si | Copper Alloy Castings | 1 | 2029-08-10 |
| Korea Module System Tech. Co., Ltd. · | Ulsan | Approved Welding Workshop | 1 | 2027-07-31 |
| Korea Movenex Co. Ltd. | ULSAN | Steel Forgings | 1 | 2028-12-31 |
| Korea OMT Co., Ltd. · | Ulsan | Approved Welding Workshop | 1 | 2028-06-16 |
| Korea Special Precision Co., Ltd. · | Busan | Steel Forgings | 2 | 2028-06-30 |
| KOREA STEEL CO., LTD. · | Haman-gun | Steelmaking | 1 | 2028-06-30 |
| KOREA STEEL CO., LTD. (Noksan Works) · | Busan | Rolled Steel Products | 1 | 2026-10-30 |
| KOREA STEEL POWER CO.,LTD. · | Gimhae-si | Steel Castings | 1 | 2028-12-31 |
| Korea Testing & Research Institute · | Ulsan | Approval of Service Suppliers | 1 | 2027-07-12 |
| Korea Yanase Co., Ltd. · | Changwon-si | Approved Welding Workshop | 1 | 2028-03-31 |
| KORVAL CO., LTD. | Busan | Safety Relief Valve for LNG/LPG Service | 1 | 2030-06-30 |
| Kosco Co., Ltd · | Busan | Approval of Service Suppliers | 3 | 2027-12-15 |
| KOSMOA Inc. · | Busan | Approval of Service Suppliers | 3 | 2029-02-19 |
| KPC Metal Co., Ltd. · | Gyeongsan-Si | Steel Forgings; Wrought Aluminium and Aluminium Alloys; Wrought Titanium and Titanium Alloys | 3 | 2026-12-17 |
| KS Industry Co., Ltd. · | Haman-gun | Approved Welding Workshop | 1 | 2029-05-31 |
| KSB Seil Co., Ltd. · | Busan | Hydraulic Actuator for Valve (Not Hydraulic Motor); Marine Equipment Directive; Oil discharge monitoring and control system for oil tankers | 3 | 2030-05-11 |
| KTE Co., Ltd. · | Busan | Peripheral Equipment; Remote Control System, Propulsion, Thruster and Steering | 2 | 2030-03-06 |
| KTMI Co., Ltd. · | Gimhae | Approved Welding Workshop; Emergency Towing Arrangement; High Holding Power Anchor; Vent Head for Tank | 5 | 2027-11-01 |
| Kuk Dong Level Co. · | Busan | Level Indicator; Level Switches | 3 | 2031-06-20 |
| Kukdong Electric Wire Co., Ltd. | Jincheon-Gun, Jincheon-gun | Electric Power Cable; Fiber optical cable; Flexible cable; High Voltage Cable; Lightweight Electric Cable; Low Voltage Cable | 115 | 2031-03-30 |
| Kukdong Ind. Eng. · | Busan | Approved Welding Workshop | 1 | 2027-09-21 |
| Kum Hwa Cast Steel & Ind Mach. Co. · | Yangsan-Si | High Holding Power Anchor; Steel Castings | 2 | 2028-11-06 |
| Kum Hwa Steel Co., Ltd. · | Busan | Steel Castings | 1 | 2027-03-31 |
| Kum Kang Co., Ltd. · | Busan | Copper Alloy Castings | 1 | 2028-02-28 |
| Kum Kang Precision Co., Ltd. · | Busan | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2027-06-29 |
| Kumho ENG · | Miryang-si | Approved Welding Workshop | 1 | 2027-02-27 |
| Kumhwa ENG Co., Ltd. · | Ulsan | Approved Welding Workshop | 1 | 2029-03-26 |
| Kumkang Ind. Co., Ltd. (Eonyang Plant) · | Ulsan | Steel Pipes and Fittings | 1 | 2027-06-30 |
| KUMKANG P&S CO., LTD. · | Busan | Approved Welding Workshop | 1 | 2029-02-11 |
| Kumoh Mach. & Elec. Co. Ltd. | Engine Safety, Control and Alarm System; Misc. detector; RPM sensor; Vibration monitoring system | 6 | 2031-07-07 | |
| Kunhwa Industries Co., Ltd (Seongpo 1 Factory) · | Gyeongsangnam-Do | Approved Welding Workshop | 1 | 2027-08-08 |
| Kurbo Co., Ltd. · | Busan | Metallic Expansion Joints | 1 | 2031-01-04 |
| Kwang Hee Co., Ltd. · | Inchon | Iron Castings | 1 | 2027-06-30 |
| KWANG JIN METAL HEAT TREATMENT · | Busan | Heat treatment | 1 | 2029-05-26 |
| Kwang San Co., Ltd. · | Busan | Vent Head for Tank | 1 | 2028-04-18 |
| Kwang-San Co., Ltd. · | Busan | Vent Head for Tank | 1 | 2031-01-10 |
| KwangLim Marine Tech Co., Ltd. · | Busan | Approved Welding Workshop; Cable Ties; Class A Door; Horizontal Class A Hatches; Weathertight Door | 11 | 2031-03-12 |
| Kwangsung Co., Ltd. (Miryang Second Factory) · | Miryang-Si | On board exhaust gas cleaning systems | 1 | |
| KYEONG NAM BEND CO., LTD. · | Gimhae-Si | Steel Pipes and Fittings | 1 | 2027-01-31 |
| KYMTECH CO., LTD. · | Uiryeong-Gun | Steel Castings | 1 | 2026-11-15 |
| Kyung Eun Ceramics Co., Ltd. · | Gimhae-Si | Wire/Cut Wire/Flux/Backing combination | 1 | 2028-03-13 |
| Kyung Sung EPR Co., Ltd. · | Busan | Insulation Materials for Gas Carriers | 1 | 2026-11-25 |
| KYUNG-IN METAL CO., LTD. · | Gimpo-si | Heat treatment | 1 | 2029-07-06 |
| KYUNGDONG ONE CO., LTD. · | Seoul | Insulation Materials for Gas Carriers | 1 | 2028-12-11 |
| LHE Co., Ltd. | Gimhae-Si | Manufacture of Welded Pressure Vessels, Class II | 1 | 2027-02-20 |
| LS Cable & System Ltd (Donghae Plant) · | Donghae-si | Electric Power Cable; High Voltage Cable; Low Voltage Cable | 70 | 2031-05-10 |
| LS ELECTRIC Co., Ltd. (Cheon-an Plant) · | Cheonan-si | Frequency Converter; Peripheral Equipment; Programmable Electronic System | 3 | 2030-10-29 |
| LS ELECTRIC Co., Ltd. (Cheong-ju Plant) · | Cheongju-Si, Cheongju-si | Circuit Breaker; Contactor; Contactor Relay; Overcurrent- and Short-Circuit Relay | 11 | 2030-03-11 |
| LS Metal Co., Ltd. (Busan Plant) · | Busan | MSA; Steel Pipes and Fittings | 2 | 2030-07-03 |
| LS POWER SOLUTION CO., LTD. · | Busan | Navigation Light Controllers | 1 | 2028-08-21 |
| Luminar Marine Co., Ltd. · | Busan | Stern Tube Bearing Material; Stern Tube Seal | 2 | 2029-09-16 |
| M-TECH · | Gimhae | Approved Welding Workshop | 1 | 2028-02-03 |
| M.T. Korea Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2028-03-06 |
| M.T.G. Co., Ltd. · | Ulsan | Adhesive | 1 | 2030-01-01 |
| Macron Co., Ltd. · | Ulsan | Level Indicating System | 1 | 2028-06-30 |
| Manho Rope & Wire Ltd. (Pusan) | Busan | Steel Wire Ropes | 1 | 2027-12-31 |
| Mansung Precision Machinery · | Yangsan-si | Approved Welding Workshop | 1 | 2028-03-10 |
| Manwoo Co., Ltd. · | Kyeongju | Approved Welding Workshop | 1 | 2029-05-26 |
| Marine Systems Industries Global Service · | Yeong-am-gun | Approved Welding Workshop | 1 | 2028-08-17 |
| Maritime Radio Co., Ltd. · | Busan | Approval of Service Suppliers | 2 | 2028-04-10 |
| Marsen Co., Ltd. · | Busan | Level Alarm System; Level Indicating System; Oil discharge monitoring and control system for an oil tanker; Oil/water interface detectors; Pressure Transmitter; Water Ingress Detection | 6 | 2030-09-22 |
| Melatone, Ltd. | Incheon | Marine Equipment Directive; Surface materials and floor coverings with low flame-spread characteristics: decorative veneers | 2 | 2029-03-24 |
| Minsung Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2029-05-31 |
| Mirae Heat Treatment Co. · | Daegu | Heat treatment | 1 | 2028-09-11 |
| Mirim Technology Co. · | Busan | Class A Door | 1 | 2028-11-29 |
| MITG Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2028-01-07 |
| MJ TSR Co., Ltd. (Eonyang Factory) · | Ulsan | Approved Welding Workshop | 1 | 2029-03-31 |
| Modern Casting & Metals Co., Ltd. · | Busan | Steel Castings | 1 | 2029-09-30 |
| Modern Intech Co., Ltd. · | Busan | Bedding components; Draperies, curtains and other suspended textile materials and films; Upholstered furniture: - cover material for flame-retardant filling material (tested in specific combination as intended for further application) | 7 | 2030-08-24 |
| MokwonENG Co., Ltd. · | Yeongam-Gun | Approved Welding Workshop | 1 | 2027-10-20 |
| More Ind. Co., Ltd. · | Busan | Pressed Parts | 1 | 2027-06-10 |
| MOT Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2027-04-28 |
| Mov Limited. · | Ulsan | Jet Fire Protection | 3 | 2030-09-14 |
| MQ Co., Ltd. · | Gyeongju-si | Approved Welding Workshop | 1 | 2029-01-31 |
| MQ Co., Ltd. (Factory no.2) · | Gyeongju | Approved Welding Workshop | 1 | 2029-01-31 |
| MRC Inc. · | Busan | Approval of Service Suppliers; Automatic Telephone System; Batteryless Telephone System; Central Alert Management System; Conning Display; Electronic chart display and information system (ECDIS); Integrated navigation system; Marine Equipment Directive; Miscellaneous Internal Communication Equipmen | 17 | 2031-01-11 |
| MS Industrial Co., Ltd. · | Yeongam-Gun | Approved Welding Workshop | 1 | 2027-06-02 |
| MS TECH Co. | Haman-gun | Approved Welding Workshop | 1 | 2029-02-26 |
| Mt. H Control Valves Co., Ltd. | Busan | Crankcase Explosion Relief Valve; Globe Valve; Safety Relief Valve for LNG/LPG Service | 5 | 2031-09-17 |
| Mu Chang Eng. Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2027-02-13 |
| Mycom Korea Co. Ltd. | Changwon | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2029-01-07 |
| MYTEC Co., Ltd. | Busan | Manufacture of Welded Pressure Vessels, Class I & II | 2 | 2028-02-07 |
| Myungjin Engineering Co., Ltd. · | Ulsan | Steel Pipes and Fittings | 1 | 2027-12-31 |
| NAM TAE PYUNG YANG CO., LTD. · | Busan | Approval of Service Suppliers | 3 | 2029-05-06 |
| National Oilwell Varco Korea Co.,Ltd. | Ulsan | Assembling of type approved hoses and couplings | 1 | 2028-02-24 |
| Navicom Electronics Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2027-12-18 |
| Navisco · | Ulsan | Approval of Service Suppliers | 1 | 2028-05-16 |
| Navutec Co., Ltd. · | Busan | Approved Welding Workshop; Fire Extinguishing System for Heli-deck (Pop-up system); Firefighters outfit - lifeline; Water and Foam Monitor | 4 | 2029-07-15 |
| NEONENT CO., LTD. · | Yangsan-Si | Steel Castings | 1 | 2027-07-14 |
| NES Inc · | Gimhae-Si | Metallic Expansion Joints | 2 | 2029-04-14 |
| NEW ASIA CO., LTD. | Yeoju-Si | Steel Pipes and Fittings | 1 | 2027-02-07 |
| NEXTEEL CO., LTD. (Gyeongju factory No.1) · | Gyeongju-Si | Steel Pipes and Fittings | 1 | 2027-12-01 |
| NEXTEEL Co., Ltd. (P) · | Pohang-Si | Steel Pipes and Fittings | 1 | 2027-06-30 |
| Nikkiso Clean Energy & Industrial Gases Korea Co., Ltd. | Busan | Approved Welding Workshop | 1 | 2028-07-19 |
| Nippon Paint Marine Korea Co., Ltd. · | Busan | Anti-Fouling Systems; Protective Coating Systems - Seawater Ballast Tanks | 4 | 2031-08-13 |
| NIT Co., Ltd. · | Changwon | Measurement Converter | 1 | 2029-07-10 |
| NK Co., Ltd. · | Busan | CO2 System; Equivalent Fixed Gas Fire Extinguishing System; Fixed Dry Chemical Fire Extinguishing System for Gas Fuel Bunkering Station; Mobile Water Monitor | 4 | 2028-06-19 |
| NK Co., Ltd. (No.1 Factory) · | Busan | Concentrate for fixed high expansion foam fire extinguishing systems for machinery spaces and cargo pump rooms.; Equivalent Fixed Gas Fire Extinguishing System; Fixed Water Based Local Application System; Flexible Hoses of Non-Metallic Material with Permanently Fitted Couplings; Inside Air Foam Fire | 6 | 2031-06-22 |
| NL Noise and Vibration Technology Co., Ltd · | Busan | Approval of Service Suppliers | 1 | 2029-07-15 |
| Noah Actuation Co., Ltd. · | Incheon | Electric Actuator | 1 | 2028-06-19 |
| Nova Electronic Co., Ltd. · | Incheon | Approval of Service Suppliers | 2 | 2028-02-23 |
| NRTEC CO., LTD. | Gimhae si | Approved Welding Workshop | 1 | 2028-05-24 |
| NU Co., Ltd. · | Gimhae-si | Flexible Hoses for CO2 Systems | 1 | 2030-05-06 |
| OCEANEERS CO LTD · | Busan | Approval of Service Suppliers | 1 | 2029-06-01 |
| OceanRND Co., Ltd. · | Busan | Wave Monitoring System | 1 | 2028-04-02 |
| OH SUNG INVESTMENT CASTING CO., LTD. · | Busan | Steel Castings | 1 | 2028-12-31 |
| OK Kwang Engineering Co., Ltd. · | Busan | Copper Alloy Castings | 1 | 2028-06-30 |
| OK T&T Co., Ltd. · | Busan | Condition Monitoring System | 1 | 2027-05-11 |
| Oriental Marine Tech Co., Ltd. · | Changwon-si | Approved Welding Workshop | 1 | 2028-05-21 |
| Oriental Precision & Engineering Co., Ltd. | Busan | Approved Welding Workshop; Life-saving appliances | 82 | 2050-01-01 |
| Oriental Precision Machinery Co., Ltd. | Busan | Approved Welding Workshop; Launching appliances for free-fall lifeboats; Launching appliances using fall (davits); Launching appliances using falls (Davits); Liferaft launching appliances (Davits); Marine Equipment Directive; Winches for survival craft and rescue boats: (a) davit launched lifeboats; | 21 | 2030-03-16 |
| Orion Ind Co., Ltd. · | Busan | A & B Class divisions fire integrity: A class divisions.; Marine Equipment Directive; Non-combustible materials; Primary deck coverings; Surface materials and floor coverings with low flame-spread characteristics: floor coverings | 8 | 2031-06-02 |
| Orion Technology Co., Ltd. · | Gimcheon-Si | Bridge Monitor; Monitors, Terminals; Personal Computer | 3 | 2029-12-09 |
| OSCG Co. Ltd. · | Busan | Cable Gland | 1 | 2029-11-05 |
| P&C TECH CO., LTD. · | Cheonan-si | Anti-Fouling Systems; Protective Coating Systems - Seawater Ballast Tanks | 2 | 2030-12-31 |
| Pacific Ocean Marine Industries Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2026-12-31 |
| Paco Hitec Co., Ltd. · | Busan | Assembling of type approved hoses and couplings | 1 | 2026-12-31 |
| PALMI METAL IND. CO., LTD. · | Changwon-si | Iron Castings | 1 | 2028-06-30 |
| Panasia Co., Ltd. | Busan | Ballast Water Management System; Control Panel; Emission Monitoring System; Float Gauge Level Indicator; Gauge Glass Level Indicator; Level Alarm System; Level Indicating System; Level Indicator; Level Switches; Level Transmitter; On board exhaust gas cleaning systems; Pressure Sensor; Temperature S | 46 | 2030-10-18 |
| Parker Hannifin Connectors Ltd. | Yangsan-si | Flexible Hoses for CO2 Systems; Flexible Hoses of Non-Metallic Material with Permanently Fitted Couplings | 5 | 2031-08-28 |
| Parker Hannifin Connectors Ltd. (Pusan) | Busan | Assembling of type approved hoses and couplings | 1 | 2027-07-08 |
| PK Valve & Engineering Co., Ltd. | Changwon-Si, Changwon-si | MSA; Steel Castings | 2 | 2028-06-30 |
| PnC TECH BUSAN CO., LTD. · | Busan | Marine Equipment Directive; Penetrations through "A" class divisions: electric cable transits; Plastic Piping System, Thermoplastic | 4 | 2028-05-24 |
| PNL CO., LTD. · | Geoje | Approved Welding Workshop | 1 | 2028-05-31 |
| Pohang Special Welding Co., Ltd. · | Pohang | Electrogas; Flux Cored Wire/Gas combination; Wire/Flux combination; Wire/Gas combination | 11 | 2030-05-26 |
| Poong Jin Metal Co., Ltd. · | Busan | Manufacture of Welded Pressure Vessels, Class II; Steel Castings | 2 | 2028-02-28 |
| Poongsan Corporation. Angang Plant · | Gyeongju-Si | Wrought Aluminium and Aluminium Alloys | 1 | 2027-06-30 |
| POSCO Co., Ltd. · | Pohang-Si, Pohang-si | MSA; Steelmaking and Rolled Steel Products | 2 | 2028-07-19 |
| POSCO Gwangyang Works · | Gwangyang-si | MSA; Steelmaking and Rolled Steel Products | 2 | 2030-07-07 |
| POSH Co., Ltd. (Geoje Office) · | Geoje-si | Approved Welding Workshop | 1 | 2029-01-31 |
| PPI Pipe Co., Ltd. · | Hwaseong-Si | Plastic Piping System, Thermoplastic | 1 | 2029-09-02 |
| Prosave Co.,Ltd. | Gimhae-Si, Gimhae-si | Crankcase Explosion Relief Valve; Deflagration Flame Arrester; Deluge Valve; Devices to prevent the passage of flame into the cargo tanks in tankers: - P/V valves; Devices to prevent the passage of flame into the cargo tanks in tankers: flame arresters; Explosion relief valve for engine exhaust lin | 14 | 2030-12-15 |
| Pu Sung Metal Co., Ltd. · | Siheung-Si | Steel Forgings | 1 | 2027-06-30 |
| Pukyoung Precision Industry Co. Ltd. · | Busan | Approved Welding Workshop | 1 | 2027-03-01 |
| Pusan Internal Tec. & Punching Co., Ltd. | Busan | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2028-09-08 |
| QRP TECH · | Busan | Approved Welding Workshop; Electric Actuator | 2 | 2029-12-17 |
| Remitite Co., Ltd. · | Gimhae-Si, Gimhae-si | Bulkhead/Deck Penetration; Class A and B Penetration; Class H Penetration; Fire Seal | 11 | 2031-02-01 |
| Riken Keiki Korea Co., Ltd. · | Busan | Automatic Gas Detection System | 1 | 2027-09-17 |
| RM Ltd. · | Hwaseong-si, | Floor Covering | 1 | 2031-05-25 |
| S & W Co., (Pusan Factory) · | Busan | Heat treatment | 1 | 2028-10-16 |
| S&S Valve Co., Ltd. | Jinju-Si | MSA | 1 | 2027-09-19 |
| S&SYS Co., Ltd. | Hwaseong-si | Control and Monitoring System; High Voltage Switchgear and Control Gear Assemblies | 3 | 2029-02-24 |
| SaeMyung Inspection Technology Co., Ltd. (Sacheon Branch) · | Sacheon-si | Approval of Service Suppliers | 1 | 2028-07-20 |
| Saeron Castech Co., Ltd. · | Gimhae-si | Steel Castings | 1 | 2028-03-24 |
| Saint-Gobain ISOVER Korea Co., Ltd. · | Dangjin-Si | Non-Combustible Material | 1 | 2028-04-06 |
| Sam Hwa Chemicals Co., Ltd. · | Cheonan-Si, Cheonan-si | Surface Material of Low Flame Spread | 2 | 2030-08-10 |
| Sam Yang Metal Ind. Co., LTD. | Busan | Copper Alloy Castings | 1 | 2028-06-30 |
| Samboo Metal Co., Ltd. · | Miryang-si | Steel Forgings | 1 | 2028-06-30 |
| Sambu S&F Co., Ltd. · | Busan | Steel Forgings | 1 | 2029-02-26 |
| Samchully Metal Co., Ltd · | Cheonan-si, | Iron Castings | 1 | 2028-12-31 |
| Samdong Steel Co., Ltd. (Factory no.1) · | Gyeongju-si | Approved Welding Workshop | 1 | 2028-07-31 |
| Samdong Steel Co., Ltd. (Factory no.2) · | Kyeongju | Approved Welding Workshop | 1 | 2028-07-31 |
| Samgong Co., Ltd. · | Busan | 5 ppm Bilge Water Separator; A and "B" class fireproof windows and side scuttles; Approved Welding Workshop; Oil-filtering equipment (for an oil content of the effluent not exceeding 15 p.p.m.; Sacrificial Anode Material for Corrosion Protection; ‘A’ and ‘B’ class fire proof windows and side scuttle | 19 | 2031-07-22 |
| Samgong Co., Ltd. Daebul Factory · | Yeongam-gun | Approved Welding Workshop | 1 | 2028-11-15 |
| Samhoi Industrial Co., Ltd. · | Gimhae-Si, Gimhae-si | Flow Gauges/Transmitters; Flow Switches; Level Switches; Measurement Converter; Pressure Gauges/Transmitters; Temperature Transmitter | 9 | 2031-06-08 |
| SAMHWA PAINTS INDUSTRIAL CO., LTD. · | Ansan-Si | Class H Fire Wall and Bulkhead; Class H Lightweight Horizontal Partition and Deck; Jet Fire Protection; Structural Fire Protection | 5 | 2030-01-12 |
| Samjeong TBM Corp. (No.1 Factory) · | Gimhae-si | Steel Castings | 1 | 2027-10-31 |
| SAMJUNG Superalloys Co., Ltd. · | Gimhae-si | Steel Castings | 1 | 2028-08-31 |
| Sammi Metal Products Co., Ltd. · | Changwon-si | Steel Forgings | 1 | 2029-04-30 |
| Samnok Co., Ltd. (No.3 Factory) · | Geoje-Si | Approved Welding Workshop | 1 | 2027-04-18 |
| Samnok Co., Ltd. Hannae Plant · | Geoje-si | Approved Welding Workshop | 1 | 2028-02-24 |
| SAMNOK-ENG · | Geoje-si | Approved Welding Workshop | 1 | 2028-01-31 |
| Samsung Heavy Industries Co., Ltd. · | Geoje-Si, Geoje-si | Approval of Service Suppliers; Shop Primers | 4 | 2028-09-22 |
| Samsung Nonferrous Metal Co., Ltd. · | Gimhae-si | Copper Alloy Castings | 1 | 2029-01-31 |
| Samsung Stainless Commerce & Ind. Co., Ltd. | Kwangju | Steel Pipes and Fittings | 1 | 2028-05-18 |
| Samyoung M-tek Co. Ltd | Haman-gun | Steel Castings | 1 | 2028-04-30 |
| Samyoung Machinery Co., Ltd. Nonsan Factory · | Chungcheongnam-Do | Iron Castings | 1 | 2027-12-31 |
| SAN Engineering Co.,Ltd. · | Seongnam-Si | Bridge Navigational Watch Alarm System (BNWAS); Marine Equipment Directive | 2 | 2030-03-03 |
| SANG WOO CLAMP Co., Ltd. · | Yangsan-Si | Fastening Clamps | 1 | 2028-05-30 |
| SangBong Corporation · | Pyeongtaek-Si, Pyeongtaek-si | Bulk Loading Hoses with Permanently Fitted Couplings; LNG/LPG Loading hoses | 6 | 2031-01-25 |
| SB CO.,LTD. · | Gimhae-Si | Fuse | 1 | 2026-10-20 |
| SB Sunbo Co., Ltd. (Daebul Factory) · | Yeong-am-gun | Approved Welding Workshop | 1 | 2029-01-28 |
| Se Jin Valve Ind. Co., Ltd. · | Busan | Butterfly Valves | 1 | 2027-02-14 |
| SE Korea Co., Ltd. · | Busan | Approval of Service Suppliers | 3 | 2029-06-10 |
| Se Woon T&S Co., Ltd. · | Yeongcheon-Si | Class A Bulkhead; Horizontal Class A Division; Non-Combustible Material | 5 | 2027-11-14 |
| Se-Won Industries Co., Ltd. · | Haman-Gun, Haman-gun | Approved Welding Workshop; Devices to prevent the passage of flame into the cargo tanks in tankers: - flame arresters; Expansion Joint for Pipe, Slide Type and Flexible Type; Flame Screen Unit; Metallic Expansion Joints; Pipe Couplings; Pressure-Vacuum Relief Valve; Vent Head for Tank | 10 | 2031-08-22 |
| Sea Yang Enterprise Co., Ltd. · | Geoje | Approved Welding Workshop | 2 | 2027-04-14 |
| SeAH Besteel Corporation · | Gunsan-si | Steel Forgings; Steelmaking and Rolled Steel Products | 2 | 2028-12-31 |
| SeAH Changwon Integrated Special Steel Corporation | Changwon-Si, Changwon-si | Duplex Stainless Steels; Steel Forgings; Steel Pipes and Fittings; Steelmaking and Rolled Steel Products | 5 | 2028-06-30 |
| SeAH CM Corp. · | Gunsan-Si | Marine Equipment Directive; Surface materials and floor coverings with low flame-spread characteristics: decorative veneers | 2 | 2029-12-18 |
| SeAH Steel Corp. · | Changwon-si | Steel Pipes and Fittings | 1 | 2029-07-31 |
| SeAH Steel Corp. (No.2 Pipe Line Plant) · | Gunsan-Si | Steel Pipes and Fittings | 1 | 2026-12-31 |
| SeAH Steel Corporation Pohang plant · | Pohang-Si | Steel Pipes and Fittings | 1 | 2027-11-11 |
| SeAH Steel Corporation Suncheon Plant · | Suncheon-Si, Suncheon-si | Approved Welding Workshop; Steel Pipes and Fittings | 2 | 2028-12-14 |
| Sealink Electronics Co., Ltd. · | Busan | Approval of Service Suppliers | 2 | 2027-10-20 |
| Seamender Diving Ltd. · | Busan | Approval of Service Suppliers | 1 | 2028-03-21 |
| Seaocean Electronics Co., Ltd. · | Busan | Approval of Service Suppliers | 2 | 2028-06-29 |
| Seaward Commercial Diving Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2028-11-13 |
| Segye Casting Co., Ltd. · | Yeongcheon | Steel Castings | 1 | 2029-06-07 |
| SEJIN HEAVY IND. CO., LTD. | Ulsan | Approved Welding Workshop; Class A Bulkhead; Horizontal Class A Division; Manufacture of Welded Pressure Vessels, Class I & II; Non-Combustible Material | 11 | 2031-04-19 |
| Sejin Industries Co., Ltd. · | Changwon-Si | Approved Welding Workshop | 1 | 2027-10-01 |
| Sejin Technical Industries Co., Ltd. · | Yangsan-Si, Yangsan-si | A & B Class divisions fire integrity: A class divisions.; A & B Class divisions fire integrity: B class divisions.; A’ & ’B’ Class divisions fire integrity: - ’B’ class division; Fire Doors; Marine Equipment Directive | 38 | 2030-11-23 |
| SEJONG Ltd. · | Uiryeong-Gun | Approved Welding Workshop | 1 | 2027-01-14 |
| Seki Hi-Tech Co., Ltd. | Busan | Horizontal Class B Division | 1 | 2029-09-19 |
| Senaco Co., Ltd. | Haman-Gun | Misc. detector | 1 | 2026-12-31 |
| Seohan ENP Co., Ltd. · | Gyeongju-Si | MSA; Steel Forgings | 2 | 2027-12-31 |
| Seoil Plant Co., Ltd. · | Changwon-Si | Approved Welding Workshop | 1 | 2027-07-30 |
| Seongjee Engineering Co., Ltd. · | Busan | Fire Doors; Fire dampers; Marine Equipment Directive | 6 | 2031-08-18 |
| Seorim Ind. Co., Ltd. (No.1 Factory) · | Changwon-Si | Approved Welding Workshop | 1 | 2026-10-23 |
| Seorim Industrial Co., Ltd. (No.1 Factory) · | Changwon-Si | Approved Welding Workshop | 1 | 2027-05-14 |
| Seoul Electric Wire Co., Ltd. | Eumseong-Gun, Eumseong-gun | Electric Power Cable; Low Voltage Cable; Switchboard wire | 23 | 2031-01-12 |
| Seoul Inspection & Testing Co., Ltd. (Changwon branch) · | Changwon-si | Approval of Service Suppliers | 1 | 2028-06-02 |
| SEUNGJIN Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2027-12-06 |
| Seyoung Co., Ltd. · | Yeongam-gun | Approved Welding Workshop | 1 | 2028-04-10 |
| SEYOUNG ENG. CO., LTD. · | Gyeongju-si | Approved Welding Workshop | 4 | 2029-02-28 |
| SGS Busan Diving LTD · | Busan | Approval of Service Suppliers | 1 | 2026-10-31 |
| SGS Korea Co., Ltd. · | Busan | Approval of Service Suppliers | 2 | 2028-09-22 |
| Shilla E&T Co., Ltd. · | Busan | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2026-12-31 |
| Shilla Industry | Gyeongju-Si, Gyeongsnagbuk-Do | Approved Welding Workshop | 1 | 2027-09-10 |
| Shin Han Chemical Co., Ltd. · | Gwangju | Class A and B Penetration | 2 | 2029-01-30 |
| SHIN HAN METAL CO., LTD. · | Steel Pipes and Fittings; Wrought Titanium and Titanium Alloys | 2 | 2028-06-30 | |
| SHIN IL ACE CO., LTD. | Busan | Pipe Couplings, Bite and Compression Type | 3 | 2027-12-31 |
| Shin Myung Tech. Co., Ltd. · | Yangsan-City, Gyeongnam, Yangsan-Si | Approved Welding Workshop; Life-saving appliances | 2 | 2030-01-01 |
| Shin Woo Industrial Co., Ltd. · | Yeongam-Gun | Approved Welding Workshop | 1 | 2027-08-30 |
| Shin Woo Industrial Co., Ltd. (2nd factory) · | Yeongam-gun | Approved Welding Workshop | 1 | 2028-09-07 |
| Shin Young Metal Co., Ltd. · | Gyeongju | Steel Castings | 1 | 2028-06-30 |
| Shin-Han Metal Co., Ltd. · | Changwon-Si, Changwon-si | Copper Alloy Castings; Iron Castings | 2 | 2029-04-30 |
| Shinan Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2027-08-12 |
| Shindong Digitech Co., Ltd. · | Busan | Approval of Service Suppliers | 2 | 2028-04-10 |
| SHINDONG RADIO CO.,LTD · | Busan | Approval of Service Suppliers | 2 | 2027-03-15 |
| SHINHWA HI-TEC CO.,LTD. · | Busan | Pipe Couplings, Bite and Compression Type | 1 | 2028-04-18 |
| SHINHWA TECH CO., LTD. · | Pohang-Si, | Approved Welding Workshop | 1 | 2029-02-12 |
| Shinki Cable Co., Ltd. · | Jeonju-Si | Electric Power Cable; Low Voltage Cable; Switchboard wire | 3 | 2027-09-17 |
| Shinsung Fitting Co., Ltd. · | Busan | Steel Pipes and Fittings | 1 | 2027-11-08 |
| SHINWOO E&T CO., LTD. · | Busan | Approval of Service Suppliers | 1 | 2027-05-01 |
| SHINYANG METAL IND. BANWOL CO., LTD. · | Ansan-si | Aluminium Alloy Castings | 1 | 2028-07-16 |
| SHINYANG METAL IND. CO., LTD. · | Ansan-si | Wrought Aluminium and Aluminium Alloys | 1 | 2028-07-20 |
| Shinyoung Industries Co., Ltd. · | Geoje-Si | Approved Welding Workshop | 1 | 2027-09-09 |
| SIC Corporation · | Gyeongju-Si | Approved Welding Workshop | 1 | 2027-05-05 |
| Silla Metal Co., Ltd. · | Busan | Copper Alloy Castings | 1 | 2028-02-28 |
| Simulation Tech Inc. · | Incheon | On board exhaust gas cleaning systems | 5 | |
| SJM Co., Ltd. | Siheung-Si, Siheung-si | Approved Welding Workshop; Metallic Expansion Joints | 4 | 2031-03-17 |
| SJT Co., Ltd. · | Yangsan-Si, Yangsan-si | A & B Class divisions fire integrity: B class divisions.; A’ & ’B’ Class divisions fire integrity: - ’B’ class division; Marine Equipment Directive | 6 | 2031-03-26 |
| SK Oceanplant Co., Ltd. | Miryang-si | Approved Welding Workshop | 1 | 2028-11-17 |
| SKM Manufactures Co. · | Busan | Aluminium Alloy Castings | 1 | 2028-07-31 |
| SM KOREA · | Ulsan | Approval of Service Suppliers | 2 | 2029-03-06 |
| SM Metal Co., Ltd. · | Busan | Steel Castings | 1 | 2028-04-25 |
| SM Steel Co., Ltd. Gunsan Plant · | Gunsan-Si | Rolled Steel Products | 1 | 2027-09-02 |
| SM Tech Co., Ltd. · | Busan | Non-combustible materials; Penetrations through "A" class divisions: pipe, duct, trunk, etc penetrations; Surface Material of Low Flame Spread; Thermal and sound insulation material with low flame-spread characteristics | 4 | 2030-08-25 |
| SMECO Co., Ltd. · | Sejong-si | Iron Castings | 1 | 2029-01-05 |
| Smetal Co., Ltd. · | Goryeong-gun | Iron Castings | 1 | 2029-04-30 |
| SOLCO PYROELEC CO., LTD. · | Anseong-si | Electric Cables - Heating Cables | 4 | 2030-04-29 |
| Specs Corporation · | Seongnam | Condition Monitoring System; Monitoring System | 2 | 2030-02-06 |
| SPICO Corporation | Gimhae-si | Approved Welding Workshop; Manufacture of Welded Pressure Vessels, Class I & II | 2 | 2028-10-09 |
| SSM Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2029-04-19 |
| STACO Co., Ltd. · | Yangsan | Class B Bulkhead | 1 | 2026-12-13 |
| STACO LINK Co., Ltd. Yangsan Works · | Yangsan-si | Class B Bulkhead; Class B Door; Horizontal Class B Division | 8 | 2031-05-24 |
| STAUFF KOREA Ltd. · | Busan | Approved Welding Workshop | 1 | 2028-07-22 |
| STM Marine Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2027-12-23 |
| STX Heavy Ind. Co., Ltd. (Daegu factory) · | Daegu | Turbocharger | 1 | 2028-07-13 |
| Suhbo Industry Co., Ltd. · | Yongin-Si | Lifting Gear | 1 | 2028-08-19 |
| Suhhan Industry Co., Ltd. (Factory no.2) · | Busan | Cable Ladders; Cable Tray | 2 | 2028-03-23 |
| SUN PRECISION Co., Ltd. · | Gimhae-Si | Safety Valve for Boiler and Pressure Vessel | 1 | 2029-05-05 |
| SUNBO PEACE CO., LTD. · | Gimhae-Si | Approved Welding Workshop | 1 | 2028-01-19 |
| Sunbong Hydro M/C Co., Ltd. · | Gimhae-si | Approved Welding Workshop | 1 | 2028-04-01 |
| Sung Duk Heavy Industries Co., Ltd. · | Gimhae-si | Approved Welding Workshop | 1 | 2028-02-24 |
| Sung Gwang Co., Ltd. · | Jinju-Si | Approved Welding Workshop | 1 | 2026-11-27 |
| Sung Gwang Tech. Co., Ltd. · | Hadong-gun | Approved Welding Workshop | 1 | 2028-06-29 |
| SUNG IL CO., LTD. (SIM) (Haman Factory No.1) · | Haman-gun | Approved Welding Workshop | 1 | 2028-02-23 |
| SUNG IL CO., LTD. (SIM) (New Haman Factory) · | Haman-gun | Approved Welding Workshop | 1 | 2029-07-18 |
| Sung Kwang Bend Co., Ltd. | Busan | Steel Pipes and Fittings | 1 | 2029-09-30 |
| Sung Mi Co., Ltd. | Gimhae-Si, Gimhae-si | Class A Door; Class B Bulkhead; Class B Door; Class H Door; Horizontal Class A Hatches; Horizontal Class B Division | 39 | 2031-07-06 |
| Sung Moon Co., Ltd. · | Yeongam-gun | Approved Welding Workshop | 1 | 2028-05-19 |
| Sung Moon Co., Ltd. (Gimhae Factory) · | Gimhae-Si | Approved Welding Workshop; Metallic Expansion Joints | 2 | 2027-10-27 |
| Sung Won Enterprise Co., Ltd. (Sacheon Factory) · | Sacheon-Si | Approved Welding Workshop | 1 | 2027-07-04 |
| Sung Won Enterprise Co., Ltd., (Gangseo Factory) · | Busan | Approved Welding Workshop | 1 | 2027-07-11 |
| Sung Woo Metal Heat Treatment Co., Ltd. · | Gyeongju-Si | Heat treatment | 1 | 2027-04-28 |
| SungIL Encare Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2027-11-11 |
| Sungil Encare Co., Ltd. (Hwajeon Factory) · | Busan | Approved Welding Workshop | 1 | 2027-04-05 |
| Sungil EnCare Co., Ltd. (Jinhae) · | Changwon | Approved Welding Workshop | 1 | 2028-09-28 |
| Sungsin Industry Co., Ltd. · | Gyeongju-si | Approved Welding Workshop | 1 | 2029-03-31 |
| Sungsin Metal Industrial Co., Ltd. · | Geumsan-gun | Steel Castings | 1 | 2028-12-31 |
| Sungwon Co., Ltd. · | Gwangyang-si | Steel Pipes and Fittings | 1 | 2028-06-30 |
| Sunil Elecomm Co., Ltd. | Yeongju | Class B Recesses for Light Fittings, Ventilation Units and similar; Marine Equipment Directive; Navigation lights | 3 | 2030-12-14 |
| SUNIL ELECOMM CO., LTD. | Gyeongsangbuk-Do | Class B Recesses for Light Fittings, Ventilation Units and similar | 1 | 2027-10-09 |
| Sunil Instrument Co., Ltd. · | Busan | Float Gauge Level Indicator; Gauge Glass Level Indicator; Level Indicator; Level Switches | 4 | 2030-08-02 |
| Survitec Korea Co., Ltd. · | Busan, Gyeongsangnam-do | Approval of Service Suppliers | 5 | 2028-01-15 |
| SV Lab. Co., Ltd · | Jeolanam-do | Approval of Service Suppliers | 1 | 2029-02-26 |
| SWIC Ltd. · | Ulsan | Approved Welding Workshop | 1 | 2029-03-21 |
| SY Metal Co., Ltd. · | Gimhae-si | Copper Alloy Castings | 1 | 2029-02-28 |
| SYF Co., Ltd. · | Gimhae-Si | Steel Forgings | 1 | 2027-06-29 |
| T&S Co., Ltd. · | Goseong-gun | Jet Fire Protection | 1 | 2030-02-26 |
| T-Tube Co., Ltd. | Busan | Steel Pipes and Fittings | 1 | 2028-05-12 |
| Tae Heung Forging · | Gimhae-Si | Steel Forgings | 1 | 2026-12-31 |
| TAE HEUNG HEAVY INDUSTRIES CO., LTD. · | Busan | Heat treatment | 1 | 2027-07-02 |
| TAE HEUNG HEAVY INDUSTRIES CO., LTD. (No.1 Factory) · | Busan | Manufacture of heat treated products - Heat treatment workshop | 1 | 2028-01-26 |
| Tae Jin Heavy Industries Co., Ltd. · | Changwon-si | Approved Welding Workshop | 1 | 2027-12-09 |
| TAE KWANG HEAD · | Gyeongsangnam-Do | Pressed Parts | 1 | 2027-09-11 |
| Tae Sang Co., Ltd. · | Busan | MSA; Steel Forgings | 3 | 2030-07-19 |
| Tae Woong Co. Ltd. · | Busan | MSA; Steel Forgings | 2 | 2028-05-31 |
| Tae Young Total Heat Treatment Co., Ltd. · | Busan | Heat treatment | 1 | 2029-06-16 |
| Taebaek Cast Iron Co., Ltd. · | Goryeong-Gun | Iron Castings | 1 | 2027-05-31 |
| Taechang ENG Co., Ltd. · | Goseong-gun | Approved Welding Workshop | 1 | 2029-05-10 |
| TAECHANG ENG CO., LTD. · | Goseong-gun | Approved Welding Workshop | 1 | 2028-12-05 |
| Taechang ENG Co., Ltd. (Daedok Factory) · | Goseong-gun | Approved Welding Workshop | 1 | 2029-05-10 |
| Taechang Precision Co., Ltd. | Busan | Steel Castings | 1 | 2028-02-28 |
| Taeheung Metal Co. · | Gimhae-si | Steel Castings | 1 | 2028-06-30 |
| Taehwa Kalpa Seal Co., Ltd. · | Busan | Gaskets and Sealings | 1 | 2028-03-14 |
| TaeWoong Steel Making Business Unit · | Busan | Steelmaking | 1 | 2029-02-07 |
| TAEYANG HEAT TREATMENT CO., LTD. · | Busan | Heat treatment | 1 | 2027-06-14 |
| Taeyang Ultratech Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2027-01-26 |
| TAEYOUNG GnT Co., Ltd. · | Gimhae-si | Approved Welding Workshop | 1 | 2028-07-07 |
| Talent LNG Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2027-05-15 |
| Tanktech Co., Ltd. | Busan | Approved Welding Workshop; Control and Monitoring System; Ejector Pump (Eductor); Emergency Towing Arrangement; Fixed Water Based Local Application System; Fixed water-based fire-fighting systems for ro-ro spaces, vehicle spaces and special category spaces: Performance-based systems as per IMO MSC.1 | 27 | 2031-08-31 |
| TECH FLOWER CO., LTD. Gimhae Plant · | Gimhae-Si | Approved Welding Workshop | 1 | 2027-05-20 |
| TECHCROSS Inc. · | Busan | Ballast Water Management System | 1 | 2031-08-18 |
| TECHMARINE S/W CO., LTD. · | Busan | Loading Computer System | 1 | 2029-06-30 |
| TERA TECH Co., Ltd. · | Ulsan | Approved Welding Workshop; Manufacture of Welded Pressure Vessels, Class I & II | 2 | 2029-02-05 |
| Tetradyne Co., Ltd. · | Seoul | Peripheral Equipment; Personal Computer | 7 | 2030-01-20 |
| The Dong Hwa Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2029-01-12 |
| THE SAFETY CO., LTD. · | Busan | Approval of Service Suppliers | 3 | 2027-11-30 |
| THT Corporation · | Busan | Check Valve; Globe Valve | 2 | 2031-03-08 |
| TK Corporation · | Busan | Steel Pipes and Fittings | 1 | 2028-04-30 |
| TK-FUJIKIN CORPORATION | Busan | Pipe Couplings, Bite and Compression Type | 1 | 2030-04-07 |
| TMC Co., Ltd · | Cheonan-Si, Cheonan-si | Electric Power Cable; Fiber optical cable; Flexible cable; High Voltage Cable; Low Voltage Cable; Switchboard wire | 84 | 2031-11-22 |
| TMS Solution Co., Ltd. · | Busan | Navigation Light Controllers; Signaling Device | 2 | 2026-11-03 |
| TNI Co., Ltd. · | Ulsan | Approved Welding Workshop; Wrought Titanium and Titanium Alloys | 2 | 2028-11-12 |
| Topsafe Co., Ltd. · | Gimhae-si | Detonation Flame Arrester; High Velocity Pressure Relief Valve | 2 | 2031-03-04 |
| Total Soft Bank, Ltd. · | Busan | Loading Computer System | 1 | 2030-01-31 |
| TRES Co., Ltd. | Busan | Approved Welding Workshop | 2 | 2027-01-24 |
| TSP Co., Ltd. (Yangsan Works) · | Yangsan-si | Iron Castings | 1 | 2029-08-31 |
| Underwater Solution Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2028-10-09 |
| Uni-Tech Co., Ltd. · | Ansan-Si, Ansan-si | Adhesive Materials for use in Insulation of Gas Carriers; Pourable Compound for Foundation Chocking; Support Materials for Gas Carriers | 7 | 2031-03-21 |
| Union Tech Co., Ltd. · | Gimhae-si | Approved Welding Workshop | 1 | 2029-02-09 |
| UnisonHKR Co., Ltd. · | Cheonan-Si, Cheonan-si | Approved Welding Workshop; Metallic Expansion Joints | 4 | 2029-02-08 |
| Ushio Korea Co., Ltd. · | Busan | Class A Door | 3 | 2030-07-13 |
| UST Co., Ltd. · | Pohang-Si | Steel Pipes and Fittings | 1 | 2027-08-20 |
| Viking Life-Saving Equipment Korea · | Busan | Approval of Service Suppliers | 3 | 2029-03-31 |
| WATERMAN-KOREA Inc. · | Busan | Approval of Service Suppliers | 1 | 2028-04-29 |
| WERIM · | Ulsan | Approved Welding Workshop | 1 | 2028-08-31 |
| Wilhelmsen Ships Service Co., Ltd. · | Busan | Approval of Service Suppliers | 1 | 2028-06-09 |
| WINTEC Co., Ltd. · | Yangsan-si | Heat treatment | 1 | 2028-05-01 |
| Wise Control Inc. · | Yongin-Si | Pressure Transmitter | 1 | 2028-11-28 |
| WOLSEONG INDUSTRY · | Changwon-si | Iron Castings | 1 | 2028-01-02 |
| Won Kwang Material Co., Ltd. · | Busan | Steel Castings | 1 | 2028-07-26 |
| Won Kwang Valve Co., Ltd. | Busan | Copper Alloy Castings; Manufacture of Welded Pressure Vessels, Class II | 2 | 2028-06-02 |
| WONIL HYUNDAE F&T CO., LTD. · | Gimhae-si | Steel Forgings | 1 | 2029-09-30 |
| Wonil T&I Co.,Ltd · | Gimpo-Si | Manufacture of Welded Pressure Vessels, Class I & II | 1 | 2026-12-31 |
| WOO SUNG METAL · | Busan | Iron Castings | 1 | 2027-06-04 |
| WOOIL Foundry Co. · | Changwon-Si | Iron Castings | 1 | 2027-12-13 |
| Woojo Hightech Co., Ltd. | Chungju-Si | Insulation Materials for Gas Carriers | 3 | 2029-03-07 |
| WOOJUGASPACK INDUSTRIAL CO., LTD. · | Busan | Gaskets and Sealings | 1 | 2027-12-04 |
| Woori Industry Co., Ltd. · | Gimhae-Si | Steel Castings | 1 | 2027-05-31 |
| WOORI OCEANTECH · | Busan | Manufacture of fibre reinforced plastics | 1 | 2027-03-05 |
| WOORIM TECHNOLOGY INDUSTRY Co., Ltd. · | Busan | Approved Welding Workshop | 1 | 2029-05-13 |
| WOOSHIN APEC CO.,LTD. (Gimhae Plant) · | Gimhae-Si, Gimhae-si | Class B Recesses for Light Fittings, Ventilation Units and similar; Navigation lights | 5 | 2031-06-08 |
| Wooshin Technical Industry Co., Ltd. | Unknown | Heat treatment | 1 | 2027-03-25 |
| Woosung Company · | Busan | Steel Forgings | 1 | 2028-02-28 |
| Woosung Engineering Co. · | Gimhae-si | Navigation Light Controllers | 2 | 2028-04-18 |
| Woosung Flowtec Co., Ltd. | Busan | Approved Welding Workshop | 1 | 2029-01-27 |
| World Energy Co., Ltd. · | Mun-gyeong-si | Cooler | 2 | 2031-03-10 |
| YCF Co., Ltd. · | Gimhae-si | Steel Forgings | 1 | 2028-06-30 |
| YCP Co., Ltd. | Busan | Steel Pipes and Fittings | 1 | 2028-06-30 |
| YCT Co., Ltd. · | Gimhae-Si | Surface materials and floor coverings with low flame-spread characteristics: Adhesives used in the construction of “A”, “B” & “C” class divisions; Surface materials and floor coverings with low flame-spread characteristics: decorative veneers | 2 | 2027-02-22 |
| Yeo Myung Enterprise · | Busan | Approved Welding Workshop | 1 | 2028-01-31 |
| YNV Co., Ltd. | Busan | Safety Relief Valve for LNG/LPG Service | 1 | 2031-05-05 |
| Yong Jin Co., Ltd. · | Goryeong-Gun | Iron Castings | 1 | 2027-07-31 |
| YONGWOO INC. · | Yangsan-Si | Wood Products | 1 | 2029-06-13 |
| Yoo Sung Enterprise Co., Ltd. · | Yeongdong-gun | Iron Castings | 1 | 2027-04-30 |
| Yoo Won Industries Ltd. · | Busan | Approved Welding Workshop | 1 | 2028-02-10 |
| You Shin Dan Yeol Co., Ltd. Factory No.1 · | Ulsan | Class A Bulkhead; Insulation Materials for Gas Carriers; Non-Combustible Material; Surface Material of Low Flame Spread | 9 | 2029-07-03 |
| You Shin Dan Yeol Co., Ltd. Factory No.2 · | Ulsan | Surface Material of Low Flame Spread | 1 | 2030-01-05 |
| Young Do Ind. Co. Ltd. · | Busan | Gas Cylinder Valves | 1 | 2028-06-29 |
| Young Jin Cast-Metal Co. · | Busan | Iron Castings | 1 | 2028-02-28 |
| Young Nam Metal Co.,Ltd. · | Gimhae-Si | Mechanical Joints; Pipe Couplings | 3 | 2029-08-12 |
| Young Nam Tech Co., Ltd. · | Haman-Gun | Approved Welding Workshop | 1 | 2026-11-16 |
| YoungKwang Co., Ltd. · | Ulsan | Approved Welding Workshop; Manufacture of Welded Pressure Vessels, Class I & II | 4 | 2028-11-10 |
| YoungKwang Co., Ltd. (Gyeongju Factory) · | Gyeongju-Si | Approved Welding Workshop | 1 | 2027-12-15 |
| YOUNGNAM ENGINEERING CO. · | Busan | Approval of Service Suppliers | 1 | 2027-03-21 |
| Youngnam Marine Machinery Ind. Co., Ltd. · | Gimhae-si | Approved Welding Workshop | 1 | 2028-08-31 |
| YOUNGWIRE · | Boryeong-Si | Steel Wire Ropes | 1 | 2027-12-31 |
| Yu Chang Industry Co., Ltd. | Gimhae-Si | Steel Pipes and Fittings | 1 | 2027-03-31 |
| YUJU Engineering Co., Ltd. · | Gimhae-Si | Approved Welding Workshop | 1 | 2027-08-04 |
| Yulwon Co.,Ltd · | Paju-Si, Paju-si | Approved Welding Workshop; Metallic Expansion Joints | 3 | 2029-10-23 |
| Yumyung Co., Ltd. · | Ulsan | Engine Safety, Control and Alarm System | 2 | 2028-09-05 |
| Yusung Bend Inc. · | Busan | Steel Pipes and Fittings | 1 | 2027-03-26 |
| Zi In Cheol Co., Ltd. · | Suwon-Si, Suwon-si, | Crankcase Explosion Relief Valve; Explosion relief valve for engine exhaust line; Explosion relief valve for engine intake manifold | 3 | 2031-09-20 |
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