1. Braskem S.A.
2. Chevron Phillips Chemical Company
3. China Petroleum & Chemical Corporation
4. CITGO Petroleum Corporation
5. Cosmo Energy Holdings Co. Ltd.
6. ENEOS Corporation
7. Exxon Mobil Corporation
8. Fujian Refining & Petrochemical Company Limited
9. Galp Energia SGPS
S.A.
10. GS Caltex Corporation
11. Idemitsu Kosan Co. Ltd.
12. Indian Oil Corporation Ltd
13. INEOS AG
14. Lotte Chemical Corporation
15. Mangalore Refinery & Petrochemicals Ltd
16. Marathon Petroleum Corporation
17. Mitsubishi Gas Chemical Company Inc.
18. Reliance Industries Limited
19. Royal Dutch Shell
20. S-Oil Corporation
21. SK Global Company
22. Sumitomo Chemical Company
23. Taiyo Oil Company Ltd.
24. TotalEnergies SE
25. Yeochun NCC Co. Ltd.
26. YPF S.A.