- CNC CITI CO., LTD.
- Address:Kwangjang Dong Hyumdai Golden Tel II 618
- Korea Petroleum Industrial Co., Ltd.
- Address:302-79,Ichon-dong ,Yongsan-gu
- KY Trading Company
- Address:# 606 Gangseo Postel, 1065-6, Hwagog 3-dong, Gangseo-gu
- DOOIN CORETECH CO.,LTD
- Address:154 Nonhyun-Dong
- JMCHEM
- Address:202 Hyundai Art Building, 665-2, Sunahm-dong, Nam-gu
- Daehwa P. C. Co., Ltd.
- Address:Deoksan-ri, Samjuk-myeon, Anseong Si
- I World Trading co.,Ltd
- Address:Dongjak Gu
- Petrofinder
- Address:# 608, Ace Tower 3,197-48, Guro-dong,
- ShinSeung Inc.
- Address:
- Korea Petroleum Ind. Co., Ltd.
- Address:302-79, Ichon-dong, Yongsan-gu, Seoul, Korea
- T&C Plus Co., Ltd.
- Address:2nd Fl. Hyosung Bldg. 407-12 Jangad-Dong, Dongdaemun-Gu
- MATEC&C, Inc.
- Address:5th floor, Hani B / D, 1192-7 Gaepo4-dong
- ChoJin corporation
- Address:R432 Sigma 3, 360-1, Yatap-dong, Bundang-gu,
- baekmi corp.
- Address:Jangangu Janganro 232 (102-1008)
- Microblends
- Address:Suite 322, Youkyoung B / D, 33-9, Dangsan-5ga, Youngdungpo
- OZ KOREA Co., Ltd.
- Address:
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