1. Amsoil Inc.
2. BASF SE
3. Beacon Lubricants Inc.
4. BP PLC
5. Buhmwoo Chemical Co. Ltd.
6. Chevron Corporation
7. China National Petroleum Corp.
8. ENEOS Corporation
9. Environmental Lubricants Manufacturing Inc.
10. Exxon Mobil Corporation
11. Fuchs Petrolub SE
12. Gulf Oil International Ltd.
13. Idemitsu Kosan Co. Ltd.
14. Indian Oil Corporation Limited
15. Kluber Lubrication
16. Lanxess AG
17. Molylub Industrial Lubricants
18. Morris Lubricants
19. Petrofer Chemie H. R. Fischer GmbH + Co. KG
20. Petronas Lubricants International
21. Petr?leo Brasileiro S.A.
22. Phillips 66
23. PJSC Lukoil Oil Company
24. Quaker Chemical Corporation
25. Rock Valley Oil & Chemical Co.
26. SABIC
27. Shell PLC
28. Sinopec Corp.
29. Sintek Group JSC
30. TotalEnergies SE
31. Valvoline Inc.
32. WD-40 Company