1. ACS Material LLC
2. Albemarle Corporation
3. BASF SE
4. Calgon Carbon Corporation
5. CarboTech AC GmbH
6. Chemviron Carbon SA
7. Clariant AG
8. Exxon Mobil Corporation
9. Honeywell UOP
10. Ingevity Corporation
11. JACOBI CARBONS GROUP
12. Johnson Matthey Plc
13. KMI Zeolite Inc.
14. Kuraray Co. Ltd.
15. Merck KGaA
16. Nanosys Inc.
17. PQ Corporation
18. Protech Minerals LLC
19. Strem Chemicals Inc.
20. Tosoh USA Inc.
21. TPR CO.LTD.
22. USALCO
LLC
23. Zeochem AG
24. Zeolyst International
25. Zeotech Corporation