Ashland Inc
Celotech Chemicals Co. Ltd.
Changzhou Guoyu Environmental S&T Co. Ltd
Chemcolloid Limited
CP Kelco U.S. Inc.
DuPont de Nemours Inc.
Hebei Yibang Building Materials Co. Ltd.
Lotte Fine Chemical
Samsung Fine Chemical Company
Shandong Head Co. Ltd
Shin Etsu Tylose
The Dow Chemical Company
Zhejiang Kehong Chemical Co. Ltd