1. Abu Dhabi National Oil Company
2. Avista Oil Deutschland GmbH
3. Calumet Specialty Products Partners
L.P.
4. Chevron Corporation
5. CNOOC Limited
6. Eni SpA
7. Ergon Inc.
8. Evonik Industries AG
9. Exxon Mobil Corporation
10. Formosa Petrochemical Corporation
11. GARS LUBRICANTS
12. GR PAHWA ENTERPRISES:
13. Grupa LOTOS S.A.
14. GS Caltex Corporation
15. H&R GmbH & Co. KGaA
16. Indian Oil Corporation Ltd
17. Neste Oyj
18. Nynas AB
19. Petroliam Nasional Berhad
20. Phillips 66 Company
21. Repsol
S.A.
22. Saudi Arabian Oil Co.
23. Shell PLC
24. SK Lubricants Co. Ltd
25. Total Energies SE