1. Cosmo Chemical Co. Ltd
2. Ishihara Sangyo Kaisha
Ltd.
3. Kon Corporation
4. Kronos Worldwide Inc.
5. Mitsui & Co. Italia S.p.A.
6. Nagamine Manufacturing Co. Ltd.
7. Nanoptek Corp.
8. Nippon Soda Co. Ltd.
9. Osaka Titanium Technologies Co. Ltd.
10. Sakai Chemical Industry Co.Ltd.
11. Showa Denko K. K.
12. Tayca Corporation
13. The Chemours Company
14. Toshiba Materials Co. Ltd.
15. Tronox Inc.