- HANDA
- Address:110-10, Junggey-ro 4 gil, Nowon-gu
- DAEWOO INDUSTRY
- Address:242-2 Gyepori Cheongtongmyon
- IL KWANG METAL FORMING CO LTD
- Address:168block 13lot, 734 Gojan-dong, Namdong-gu, Incheon, 405-822, Korea
- Daeyang Corporation.
- Address:1187-2, Sinsang-Ri, Jinryang-Eup
- Steel Corea Co., Ltd.
- Address:D-1710, Smart Valley, 30 Songdomirae-ro, Yeonsu-gu
- Woojin Mechanism
- Address:567-15, Sangdong, Wonmigu,
- UWON
- Address:287 Gupyung-dong, Saha-gu
- BA KOREA
- Address:388-7, sinin-dong,
- MYUNGSUNG CO., LTD.
- Address:219-2 Doil-Dong,
- Korea Hanshin Techno Co.,Ltd
- Address:RM118, 4MA-DONG,SHIHWA KONGDAN, SUNGKOK-DONG, ANSAN-SHI
- Trion Co.,Ltd
- Address:1033-47,Jangnim-dong ,Saha-gu
- SEOWON Co., Ltd. (GOLDEN TREE)
- Address:17,Bucheonro 198-gil, Wonmi-Gu
- Seowon Trading Co., Ltd
- Address:272-3 Hakjang-dong
- DAESUNG Industrical Co. DAEYANG Corporation.
- Address:1185-14 Sinsang-Ri
- DS HEAVY PARTS CO., LTD.
- Address:Youngdeungpo-Dong
- HOEJUN PRECISION CO.
- Address:887-94,Geomdan-dong ,Buk-gu
- KUKDONG JEYEN IND.CO.,LTD_PYEONGTAEK FACTORY
- Address:1173-4, Wonjeong-ri, Poseung-eup
- SHINHAN INDUSTRIAL CO LTD
- Address:#622-8 Namchon-dong, Namdong-gu,
- Nisshi Mechatronic
- Address:Centumdongro 99 Byeoksan e-Centum
- Saeduck Industry
- Address:720-4,Gyogok-ri ,Geundeok-myeon ,Samcheok-si