1. BASF SE
2. Chang Chun Group
3. Covestro AG
4. Hexion Inc.
5. Kumho P&B Chemicals. Inc.
6. LG Chem Ltd.
7. Merck KGaA
8. Mitsubishi Chemical Corporation
9. Mitsui Chemical Inc.
10. Nan Ya Plastics Corporation by Formosa Plastics Group
11. Nippon Steel Chemical & Material Co. Ltd.
12. Olin Corporation
13. Samyang Holdings Corporation
14. Saudi Basic Industries Corporation
15. Solvay S.A.
16. Teijin Co. Ltd.
17. Walter de Gruyter GmbH