1. Aditya Birla Capital Limited
2. Asahi Carbon Co. Ltd.
3. Ataman Kimya A.S.
4. Black Bear Carbon B.V.
5. Cabot Corporation
6. Continental Carbon Company
7. DuPont de Nemours Inc.
8. Evonik Industries AG
9. Harold Scholz & Co. GmbH
10. Himadri Chemicals Ltd.
11. Honiron Manufacturing
12. Mitsubishi Chemical Corporation
13. OCI Company Ltd.
14. Orion Engineered Carbons GmbH
15. Ralson
16. The Dow Chemical Company