- Elk Corp
- Address:687,Gwanpyeong-dong ,Yuseong-gu
- Hanil Chemical Rubber Ind Co., Ltd.
- Address:1402-8,Juan 5-dong ,Nam-gu
- Hantech Ltd.
- Address:190,Yeocheon-dong ,Nam-gu
- Jee Woo Industrial Inc.
- Address:71B-5L,Gojan-dong ,Namdong-gu
- So Lim Co., Ltd.
- Address:366-5 Woncheon-dong,Woncheon-dong ,Yeongtong-gu, Suwon-si
- Union Enterprise Co.
- Address:YOIDO-DONG LIFE OFFICETEL 1326 SEOUL KOREA
- Haeryong Silicone
- Address:624-8 Woonyang-dong
- trade associations Chanwon
- Address:7-4 yongho-dong, echang-gu
- Pion Co., Ltd.
- Address:47-10 Wonmi-dong, Wonmi-gu,
- IONTICS CO LTD
- Address:# 410 Gyeonggi R & Db Center, 906-5, Iui-Dong, Yeongtong-Gu
- Infocrypt Inc.
- Address:711,BYUCKSAN DIGITAL VALLEY I, 212-16, Guro-dong ,Guro-gu
- Myung Kwang Industrial.Co.,Ltd
- Address:No. 370-82
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