Albemarle Corporation
ALDEX Chemical Company, Ltd.
Anhui Mingmei Minchem Co., Ltd.
Anhui Sanxing Resin Technology Co., Ltd.
Anten Chemical Co., Ltd.
Arkema Group
Bariteworld
BASF SE
Bio-Rad Laboratories Inc.
Blue Pacific Minerals
Clariant AG
Eurecat S.A.
Evoqua Water Technologies LLC
Finex OY
Grupo Coypus S.A. De C.V.
Gujarat Credo Mineral Industries Ltd
Honeywell International Inc.
Ida-Ore Zeolite
Imerys Metallurgy Division
Incal Mineral Gübre Ve Yem San. Ltd.
Ion Exchange (India) Limited
Jacobi Carbons AB
Jiangsu Linhai Resin Science and Technology Co., Ltd
KNT Group
Lanxess AG
MEC Energy, Mining, Construction Ind. and Trade Co.
Mitsubishi Chemical Holdings Corporation
Molecular Products Group Ltd
National Aluminium Company Limited
Ningbo Zhengguang Resin Co., Ltd.
Novasep, LLC
Ovivo Inc.
PQ Corporation
Progressive Planet Solutions Inc.
Purolite Corporation
Resintech, Inc.
Rota Madencilik AS - Rota Mining Corporation
Samyang Corporation
Sawyer Technical Materials, LLC
St. Cloud Mining Company
Sunresin New Materials Co. Ltd
Teague Mineral Products
The Dow Chemical Company
Thermax Global
Tianjin Nankai Hecheng Science & Technology Co., Ltd (Hecheng)
Tosoh Corporation
Union Showa Corporation (Union Showa KK)
W.R. Grace & Co
ZEO, Inc.
Zeocat Soluciones Ecológicas S.L.U.
Zeocem, A.S.
Zeochem AG
Zeotech Corporation
ZMM® Canada Minerals Corp.