1. Alfa Chemistry
2. Almatis B.V.
3. BASF SE
4. C&CS GmbH
5. Cabot Corporation
6. Calgon Carbon Corporation
7. Calgon Carbon Corporation by Kuraray Holdings U.S.A. Inc.
8. CeramTec GmbH
9. Clariant AG
10. CoorsTek Inc.
11. Devson Catalyst
12. JGC Catalysts and Chemicals Ltd.
13. Magma Ceramics & Catalysts by UNICAT Catalyst Technologies Inc.
14. Noritake Co. Limited
15. Petrogas International
16. Porocel Corporation by Evonik AG
17. RVT Process Equipment GmbH
18. Saint-Gobain Group
19. Sasol Limited
20. SINO CATALYST CO. LIMITED
21. SPI Pharma
22. W. R. Grace & Co.