- Conyl
- Address:Hawangsipri-Dong, # 291-8 Conyl Building, Sungdong-Ku
- Wellmark
- Address:San 12, Gaeshin-dong Heungdukgu
- Daewon Korea Corp.
- Address:2Fl. Chang-Hak Bldg. 284-1 Yangjae Dong, Seocho Gu
- Yousung Chemical
- Address:Yousung Bldg 830-67 Yeoksam-dong, Gangnam-gu
- Chin Yang Chemical Corporation
- Address:190-3 Chungjeongro-2ga
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