- Tcc Steel
- Address:Dongyang Tower, 93, Dangsan-dong 4-ga, Yeongdeungpo-gu
- Young Heung Iron & Steel Co., Ltd.
- Address:71-1,Sinchon-dong ,Changwon-si
- The 21St Century Silica Ltd.
- Address:429-5,Bangok-ri,Sanyang-myeon ,Mungyeong-si
- Taewon Industial Co., Ltd.
- Address:122-2 Ojun-Dong
- MM.LTD SL.
- Address:ajwa road
- Bokyung international
- Address:Amnan-dong
- Daegun Construction And Services Co., Ltd
- Address:3ba, 1005ho, Shiwha Industrial Complex, Jungwangdong
- OHHA P&P
- Address:Rm 602, Pil-dong bldg, 35-1, Pil-dong 1ga, Jung-gu
- Metalbox
- Address:11-5 PALYONG-DONG
- Shinheung
- Address:1046-3, Najeon, Saenglim
- Kahwa Korea
- Address:
- Samnam Steel Industry
- Address:
- Kiswire Ltd
- Address:475,Mangmi-dong ,Suyeong-gu
- vancraft
- Address:Mazhangmian
- Semi-One Eng Co.,Ltd
- Address:189-21 Karak-dong.Songpa-Gu.Seoul
- ARA CORPORATION CO.,LTD.
- Address:# 1303 Suseo Tower, 725 Suseo-Dong, Gangnam-Gu
- GLOMETAL CO.,LTD.
- Address:143b-5l, Namdong Industrial Complex, # 718-4, Gojan-Dong
- Nvisiontec
- Address:
- General Plumbum
- Address:48 Yeouido-dong
- Hangug Resources Group
- Address:C. P. O. Box 4633