- Dongjin Semichem Co., Ltd.
- Address:472-2,Gajwa-dong ,Seo-gu
- Hwa Shin Industrial Co.,Ltd
- Address:380-10,Namyang-dong ,Jinhae-si
- UPI
- Address:18 Floor, Kyoung Am Building, 157-27 Samsung-Dong,
- Omya Korea Inc.
- Address:12Fl,Daewoo Securities Bldg., 34-3,Yeouido-dong ,Yeongdeungpo-gu
- RPM Korea Co., Ltd.
- Address:16-91, Hangangro-3ga, Yongsan-gu
- TAS total aluminium service
- Address:Sunhwa-Ri, Jinryang-Eup
- Amosys
- Address:# 201 PP2 Dong Hongcheon-Ri, Ipjang-Myun
- Unit Industry
- Address:# 459-40, Gasan-Dong, Keumcheon-Gu
- IBWC Co., Ltd.
- Address:203 Seojung Building Seokyo-Dong Mapo-Gu
- Dunam Plastic Co.,Ltd.
- Address:616-8,Namchon-dong ,Namdong-gu
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