- Chungsol Chemical Environment Co., Ltd.
- Address:1Ma-314,Sihwa Industrial Complex,Jeongwang-dong ,Siheung-si
- Taesan Ishikawa Co., Ltd.
- Address:
- Shinmyung Engineering Co.
- Address:327-18 Dangjung-dong
- GENTECH WELDING INC.
- Address:1862, JANG HEUNG-DONG, NAM-GU
- Kst Co.,Ltd
- Address:180-7, Ocheon-ri, Yeonil-eup ,Nam-gu, Pohang-si
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