1. AP Exhaust Products Inc.
2. BASF SE
3. Bosal International N.V.
4. Cataler Corporation
5. CDTi Advanced Materials Inc.
6. Corning Incorporated
7. CRI Catalyst Company LP by Royal Dutch Shell
8. Cummins Inc.
9. DCL International Inc.
10. Ecocat India Pvt. Ltd.
11. Heraeus Holding GmbH
12. Ibiden Co. Ltd.
13. Interkat Catalyst GmbH
14. Klarius Products Limited
15. N.E. Chemcat Corporation
16. Norman G. Clark
17. Solvay S.A.
18. Tenneco Inc.
19. Umicore S.A.