1. China Petroleum & Chemical Corporation
2. Cray Valley
3. Goodyear Tire & Rubber Company
4. JSR Corporation
5. Kumho Petrochemical Co. Ltd.
6. Kuraray Co. Ltd.
7. Lanxess AG
8. LG Chem Ltd.
9. LyondellBasell Industries N.V.
10. Nippon Soda Co. Ltd.
11. Nynas AB
12. Reliance Industries Limited
13. Saudi Arabia Basic Industries Corporation
14. SIBUR
15. Synthomer plc
16. Synthos S.A.
17. Trinseo
18. TSRC Corporation
19. UBE Industries
Ltd.
20. Versalis S.p.A
21. ZEON Corporation