1. Biesterfeld AG
2. BRB International B.V.
3. Elkem ASA
4. Evonik Industries AG
5. FCHEM
6. Genesee Polymers Corporation
7. Hubei Jia Yun chemical technology CO. LTD
8. Iota Silicone Oil (Anhui) Co. Ltd
9. Jiang Xi New Jia Yi New Materials Co.Ltd
10. Kaneka Corporations
11. Momentive Performance Materials Inc.
12. Siltech Corporation
13. SiSiB SILICONES by PCC Group
14. The Dow Chemical Company
15. Wacker Chemie AG