- Keitwo Co., Ltd
- Address:307-7 Yeonchuk-dong
- Metal Korea Resource
- Address:ma-po
- Metal Korea Resources Co., Ltd
- Address:1162-4, Sinnam-dong
- MAIN ROAD INTERNATIONAL CO.,LTD
- Address:
- Hankook Industries Inc.
- Address:119-1, Waryongdong, Chongroku
- GKD&E Inc.
- Address:C-907, Bupyeon Lion's Valley, Cheongcheon2-dong,
- Sogang trading Co., LTD.
- Address:119 ahnhyun-dong
- Dae Myung Metal
- Address:67-7, Gumdan-dong