1. Acuro Organics Limited
2. Akrochem Corporation
3. Albemarle Corporation
4. Almatis GmbH
5. Aluminum Corporation of China Limited (Chalco)
6. Ataman Kimya A.S.
7. Atlantic Alumina
8. Chemi Enterprises LLP
9. Chemrex Corporation Sdn. Bhd.
10. Chemvera Speciality Chemicals Pvt. Ltd.
11. Clam Desarrollo
S.L.
12. Dadco Alumina and Chemicals Limited
13. FaRetar Flame Retardant Co. Ltd.
14. Gujarat Credo Alumina Chemicals Pvt. Ltd.
15. HAYASHI-KASEI Co. Ltd.
16. Hindalco Industries Limited
17. Huber Engineered Materials
18. JIGCHEM UNIVERSAL
19. Lkab Minerals AB
20. Nabaltec AG
21. Niknam Chemicals Private Limited
22. SCR-Sibelco N.V.
23. Shandong Avant New Material Technology Co. Ltd.
24. Southern Ionics Inc.
25. Spectrum Chemical Manufacturing Corporation
26. Sumitomo Chemical Co. Ltd.
27. The Chemical Company
28. The R.J. Marshall Company
29. TOR Minerals International Inc.