- JH International Trade
- Address:namsandong 99-14, guemjung gu
- World Trading & Marketing
- Address:1901 Daewoo Richion Officetel, Jamsil-dong, Songpa-gu
- YOOSUNG TNS CO., LTD.
- Address:165-17, Nonhyun-Dong, Kangnam-Gu
- HORUS
- Address:
- Ktmtech
- Address:316, Hyungjin Plaza, 313-3, Kansuck-Dong, Namdong-Ku,
- Jungjin Metal Enginering Co., Ltd
- Address:705 7F. Byeoksan Digitalvally 132-7 Gamjeon Dong Sasang Gu
- STEEL ONE LTD
- Address:402, Sejin Plaza, Sang Dong Won Mi Gu
- Dong-a steel
- Address:woochang bldg 4F 152-2 gamjeon-dong
- DONGKUK R&S CO LTD
- Address:# 411-1, UGye-Ri, SangDong-Myeon
- YOOSUNG TNS
- Address:Seohee Bldg. , 165
- YUIL STEEL
- Address:Gyeonggi-Dobucheon-Si219-13, Nae-Dong, Ojeong-Gu
- Woosung
- Address:275-3, Yatap dong
- Kumkang Industrial Co., Ltd.
- Address:1512-3,Dadae-dong ,Saha-gu
- Hyundai RB Co., Ltd.
- Address:
- SAMMIN INDUSTRY
- Address:210-19, Yulchon-Ri, Hwangdeung-Myeon,
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