Anhui Wanwei Group Co. Ltd. Celanese Corporation
Chang Chun Group
China Petroleum and Chemical Corporation (China Petrochemical Corporation)
Japan Vam & Poval Co. Ltd. (Shin-Etsu Chemical)
Kuraray Co. Ltd. Nippon Gohsei (UK) Limited (Mitsubishi Chemical Corporation)
OCI Company Ltd. Sekisui Chemical Co. Ltd. Solutia Inc. (Eastman Chemical Company)
etc.