1. Albemarle Corporation
2. Arkema SA
3. Axens
4. BASF SE
5. Cabot Corporation
6. Catalytic Products International (CPI)
7. Clariant AG
8. Dow Chemical Company
9. Du Pont De Nemours and Company
10. Evonik Industries AG
11. Exxon Mobil Corporation
12. Honeywell International Inc.
13. Johnson Matthey
14. Lummus Technology LLC
15. Merck Group
16. Mitsubishi Chemical Corporation
17. N E Chemcat Corporation
18. Shell International B.V.
19. Sinopec Catalyst Co. Ltd.
20. Solvay SA
21. Strem Chemicals Inc.
22. S?d-Chemie India Pvt. Ltd.
23. Topsoe
24. TOSOH Corporation
25. W. R. Grace and Co.
26. Wacker Chemie AG
27. Zeolyst International