- In-Joong Industrial Co.
- Address:315-5 Gangcheong-Ri, Yeomchi-Eup,
- DC Chemical co,.Ltd.
- Address:50 Dongyang chemical Building 5th
- OZ KOREA Co., Ltd.
- Address:
- The Lubricants
- Address:Hanrim Human Tower 1128
- Sampoong Company
- Address:39-224, Incheon Industral Goods Circulating Center,Songhyeon 3-dong ,Dong-gu
- donghochemical
- Address:151-8, Ui-Chang Gu,Chang won City
- Sky International Corporation
- Address:Rm #922, Manhattan B/D, 36-2 Yoido-dong, Youngdeungpo-gu
- COMWOO
- Address:804-1004 ho, mokdong-APT, mokdong seo-ro, shinjung-DONG, yangchun-GU
- KIC CO LTD
- Address:45-212, Ihyeon-dong,
- Han Val Incorporated
- Address:19th Floor, KSCFC Bldg., 395-70 ShinDaeBang-Dong, Dongjak-Ku
- ITAL Energy, Inc
- Address:Munbal-Dong
- Kukdong Oil & Chemical Co., Ltd.
- Address:334-36,Yusan-dong ,Yangsan-si
- HEUNGKUK INDUSTRIES CO LTD
- Address:5F, 712-2, E-dong, Sangrok-gu, Ansan-SI, Gyeonggi-do, Korea
- S.C.P Co.,Ltd.
- Address:# 510, Ace-hightech, 1470, Woo-Dong
- U&I
- Address:Eunpyeong-gu