1. Balmer Lawrie
2. BASF SE
3. BP PLC
4. Chevron Corporation
5. Dow Chemical Company
6. Exxon Mobil Corporation
7. FUCHS Lubricants Germany GmbH
8. Gulf Oil International
9. Hindustan Petroleum Corporation Limited
10. Huntsman Corporation
11. Idemitsu Kosan Co.Ltd.
12. Indian Oil Corporation Ltd.
13. JX Nippon Oil & Gas Exploration Corporation
14. MOTUL S.A
15. Petrobras
16. PetroChina Company Limited
17. Phillips 66 Company
18. PTT Public Company Ltd.
19. Repsol
S.A.
20. Shell PLC
21. Sinopec
22. SK Enmove Company Ltd.
23. The Lubrizol Corporation
24. TotalEnergies SE
25. Valvoline