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