1. 3M Company
2. AGC Inc.
3. CeramTec GmbH
4. CoorsTek Inc.
5. Corning Incorporated
6. Kohler Co.
7. Kyocera Corporation
8. Materion Corporation
9. MOHAWK INDUSTRIES Inc.
10. Momentive Inc.
11. Morgan Advanced Materials
12. Morimura Group
13. RAK CERAMICS
14. Saint-Gobain S.A.
15. SCHOTT AG