- D & J trading
- Address:Na-12 3f, A-dong
- Shinsung basic materials
- Address:149-5, Yongwol-ri, Samjuk-myeon
- Soki Chemical Trade Cooperation
- Address:Kooli Building32#,2607, Seoul
- Daewoo International Corporation
- Address:84-11 Namdaemoonno 5-ga
- NES KOREA CO LTD
- Address:# 399-13, Seokyo-Dong, Mapo-Ku
- Wonsan Steel
- Address:278-1,Yongdoek-ri ,Hallim-myeon ,Gimhae-si
- ANAN POL
- Address:1155-7 Sanbond Dong
- Union Steel
- Address:890,Daechi-dong ,Gangnam-gu
- Dong-a steel
- Address:woochang bldg 4F 152-2 gamjeon-dong
- Sung-A Steel
- Address:Rm309, 3-Ba SI-Hwa industrial complex Jeongwang-dong,
- Yong Kwang Enterprise Co., Ltd.
- Address:
- MEISTER_CHEM COMPANY
- Address:Room 905 LG Eclat-1, 251-3, Seohyun-dong, Bundang-gu
- Altko & Co.,Ltd.
- Address:Yongin / Suji P. O. Box 10
- Yoojin Material Ind. Co., Ltd
- Address:223-269,Seongnam-dong ,Seo-gu
- S.L Cooperation
- Address:123-9, Gam Jeon Dong, Sasang Gu
- Heartychem Corporation
- Address:Trade Tower Rm. # 1806 World Trade Center
- EBCO
- Address:802-19 Anrak-1Dong, Dongnae-Gu,
- Grating Oversea Co. Ltd
- Address:Namdaemunno
- Udia Metal Systems Co., Ltd
- Address:1678-1 Dong-a Vilrat Seocho 1dong Seocho-gu Seoul, Korea
- BongYoung Co., Ltd.
- Address:Rm No.505, SeJin BLDG, 62-9, TaePyungRo-1Ga,