Heat Treatment Companies in Korea
451 registered factories in Korea report making heat treatment, most of them in Gyeonggi-do, Gyeongsangnam-do, Daegu.
451 factories
34 with English names
29 with ★3+ verified signals
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Request a quote Where they are Factories by province
Gyeonggi-do 116
Gyeongsangnam-do 93
Daegu 60
Incheon 50
Busan 33
Gyeongsangbuk-do 31
Ulsan 16
Chungcheongnam-do 15
Main industrial complexes
Sihwa National Industrial Complex 37 factories · 11,344 tenant companies, 11,213 operating Namdong National Industrial Complex 30 factories · 8,087 tenant companies, 7,789 operating Seongseo General Industrial Complex 26 factories · 3,364 tenant companies, 3,350 operating Banwol National Industrial Complex 14 factories Changwon National Industrial Complex 12 factories · 3,331 tenant companies, 2,859 operating Suppliers with the strongest public records top 25 of 34
Ranked by signals we can verify in public records: National Pension Service enrollment (actual employees),
years in business, Inno-Biz / Main-Biz / venture certification, stock listing, DART filings and nuclear or defense registration.
This is not a credit or quality rating.
35 employees enrolled in the National Pension Service; in business since 2010; Files with DART; Inno-Biz certified; Certified venture company
27 employees enrolled in the National Pension Service; in business since 1996; Files with DART; Inno-Biz certified
Also makes: Forgings , Automotive Parts 12 employees enrolled in the National Pension Service; in business since 2005; Files with DART; Inno-Biz certified
Also makes: Industrial Machinery 30 employees enrolled in the National Pension Service; in business since 2001; Files with DART; Inno-Biz certified
Ansan, Gyeonggi-do ★★★★★ verified signals
20 employees enrolled in the National Pension Service; in business since 2001; Files with DART; Inno-Biz certified
13 employees enrolled in the National Pension Service; in business since 2012; Files with DART; Inno-Biz certified
Also makes: Engine & Powertrain Parts Siheung, Gyeonggi-do ★★★★★ verified signals
32 employees enrolled in the National Pension Service; in business since 1999; Files with DART; Inno-Biz certified
21 employees enrolled in the National Pension Service; in business since 2006; Files with DART; Main-Biz certified
Also makes: LEDs & Lighting in business since 1987; Files with DART; Inno-Biz certified; Main-Biz certified; Certified venture company
39 employees enrolled in the National Pension Service; in business since 1988; Files with DART
Incheon ★★★★☆ verified signals
42 employees enrolled in the National Pension Service; in business since 1988; Files with DART
Gimpo, Gyeonggi-do ★★★★☆ verified signals
18 employees enrolled in the National Pension Service; in business since 2007; Files with DART
Daegu ★★★★☆ verified signals
18 employees enrolled in the National Pension Service; in business since 2012; Files with DART
Busan ★★★★☆ verified signals
13 employees enrolled in the National Pension Service; in business since 2012; Files with DART
Daegu ★★★★☆ verified signals
48 employees enrolled in the National Pension Service; in business since 2008; Files with DART
Daegu ★★★★☆ verified signals
43 employees enrolled in the National Pension Service; in business since 2011; Files with DART
3 employees enrolled in the National Pension Service; in business since 2007; Files with DART
Also makes: Automotive Parts 13 employees enrolled in the National Pension Service; in business since 2019; Files with DART
Also makes: Displays & Signboards Gimpo, Gyeonggi-do ★★★☆☆ verified signals
7 employees enrolled in the National Pension Service; in business since 2010; Files with DART
Ansan, Gyeonggi-do ★★★☆☆ verified signals
7 employees enrolled in the National Pension Service; in business since 2011; Files with DART
Industries that use heat treatment Often made together Korean factories that make heat treatment frequently also make:
Data from the Korea Industrial Complex Corp. factory registry, Korea Customs Service, National Pension Service,
Ministry of SMEs and Startups, the Korea Atomic Industrial Forum and DART. Product descriptions are translated from Korean; names marked
"romanized" are not official English names. Verify with the company before procurement.
Data as of October 2026 ·
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