1. Asahi Kasei Corporation
2. Celanese Corporation
3. Covestro AG
4. Exxon Mobil Corporation
5. Fuzhou Topda New Material Co. Ltd.
6. INEOS AG
7. Kingfa Science & Technology (India) Limited
8. Kraton Corporation
9. LCY GROUP
10. LG Chem Ltd.
11. LyondellBasell Industries Holdings B.V.
12. Poly Pacific Pty. Ltd.
13. Saudi Basic Industries Corporation
14. SO.F.TER. S.r.l.
15. Westlake Corporation