AGC Si-Tech Co., Ltd.
BASF Corporation
Cabot Corporation
Evonik Industries AG
Fuji Silysia Chemical Ltd.
Gujarat Multi Gas Base Chemicals Pvt. Ltd.
Industrias Quimicas del Ebro, S.A. (IQE Group)
Madhu Silica Pvt. Ltd.
Merck KGaA
Nalco Water - An Ecolab Company
Nissan Chemical Corporation
Nouryon Chemicals Holding B.V.
NYACOL® Nano Technologies Inc.
OCI Company Ltd.
PPG Industries, Inc.
PQ Corporation
Quechen Silicon Chemical Co., Ltd.
Solvay SA
Tokuyama Corporation
W.R. Grace & Co.
Wacker Chemie AG