1. AGC Inc.
2. Allied Mineral Products
LLC
3. Almatis B.V.
4. Alteo
5. AluChem Inc.
6. ArcelorMittal S.A.
7. Chosun Refractories Co. Ltd.
8. CoorsTek Inc.
9. Delta Refractories Inc.
10. Future Refractories
11. Galaxy Enterprises
12. HarbisonWalker International Inc.
13. H?gan?s Borgestad Holding AB
14. IFGL Refractories Limited
15. Imerys SA
16. Intocast AG
17. Krosaki Harima Corporation
18. Kyanite Mining Corporation
19. KYOCERA Corporation
20. K?ma? Manyezit Sanayi A.?.
21. Lhoist Group
22. Magnezit Group
23. Morgan Advanced Materials PLC
24. PPG Industries Inc.
25. Refmon Industries
26. Resco Products Inc.
27. RHI Magnesita GmbH
28. Ruitai Materials Technology Co.Ltd.
29. Saint-Gobain S.A.
30. The Refratechnik Group
31. Trent Refractories Ltd.
32. United Refractories Co.
33. Vesuvius PLC
34. ?i?ecam