1. Akzo Nobel N.V.
2. Arkema Group
3. Axalta Coating Systems
LLC
4. BASF SE
5. BYK-Chemie GmbH
6. CHT Germany GmbH
7. Deuteron GmbH
8. Evonik Industries AG
9. Henan Minmetals East Industrial Co. Ltd.
10. Hubei Hoyonn Chemical Industry Co. Ltd
11. Imerys S.A.
12. J.M. Huber Corporation
13. Jinsha Precipitated Silica Manufacturing Co. Ltd.
14. PPG Industries Inc.
15. PQ Corporation
16. The Lubrizol Corporation
17. Thomas Swan & Co. Ltd.
18. W. R. Grace & Co.