- Dooson Inc.
- Address:1F. 67-30,Guui-dong ,Gwangjin-gu
- sangmyung bio ceramics co,.ltd
- Address:bongyangub myungdori 374-1
- Youngshin Metal
- Address:1206-11 Shinsangri Jinliangeup
- Asian Ceratec Corporation
- Address:192-1,Sangpyeong-dong ,Jinju-si
- Oriental Material
- Address:Songpadong 86-22 201
- C&B International LTD
- Address:# 102 Hwajung-dong 880, Dukyang-gu
- G3TRANS
- Address:Byulyang
- Korea Paramount co.,ltd.
- Address:
- Soki Chemical Trade Cooperation
- Address:Kooli Building32#,2607, Seoul
- The 21St Century Silica Ltd.
- Address:429-5,Bangok-ri,Sanyang-myeon ,Mungyeong-si
- Jangam Energy
- Address:312-1 Gasan-ri Gasan-Myeon
- Camel Co., Ltd
- Address:Daehakro 316 Business Incubator Center 206
- Solmics Co.,Ltd.
- Address:624,Jangdang-dong ,Pyeongtaek-si
- Dawoo Sealant Industrial Co., Ltd.
- Address:505-3,Gasan-dong ,Geumcheon-gu
- Han Young Materials Co., Ltd.
- Address:
- SAC Corporation
- Address:384 daejong-ri, Onsan-eup, Ulju-gun
- EG METAL
- Address:Hwang sung-dong, Nam-gu, Ulsan
- DONGNAM GLOBAL
- Address:
- P & C Corp
- Address:Rm101, B1fl. 338-7 Yatap-Dong Bundang-Ku Sungnam-City, Kyungkido, South Korea
- Sunsystems Co,.Ltd
- Address:811 2 Bangbae Dong Seocho Gu