1. Akzo Nobel N.V.
2. BASF SE
3. Celanese Corporation
4. China National Petroleum Corporation (CNPC)
5. China Petrochemical Corporation (Sinopec Group)
6. Daicel Corporation
7. Dow Chemical Company
8. Huntsman International LLC
9. Indorama Ventures Public Company Limited
10. INEOS AG
11. Jiaxing Jinyan Chemical Co. Ltd.
12. Lotte Chemical
13. LyondellBasell Industries N.V.
14. Nippon Shokubai Co. Ltd.
15. Nouryon Chemicals Holding B.V.
16. OUCC Co. Ltd.
17. Oxiteno S.A. Ind?stria e com?rcio.
18. Petroliam Nasional Berhad
19. PTT Global Chemical Public Company Limited
20. Sadara Chemical Company
21. Sasol Limited
22. Saudi Basic Industries Corporation
23. Saudi Kayan Petrochemical Company
24. Shazand Petrochemical Company
25. Sintez OKA Group of Companies