1. ALLNEX NETHERLANDS B.V.
2. ALTANA AG
3. CHT Group
4. Elkay Chemicals Pvt. Ltd.
5. Elkem ASA
6. Evonik Industries AG
7. Gelest Inc.
8. Innospec Inc.
9. Kaneka Corporation
10. Primasil Silicones Limited
11. Reiss Manufacturing Inc.
12. Shin-Etsu Chemical Co. Ltd.
13. Silicone Solutions Inc.
14. Siltech Corporation
15. Wacker Chemie AG