1. BASF SE
2. BP P.L.C.
3. Castrol Limited
4. Chevron Corporation
5. Condat Corporation
6. Dow Chemical Company
7. Eastman Chemical Company
8. Exxonmobil Corporation
9. Fuchs Lubricants Denmark ApS
10. Hindustan Petroleum Corporation Limited
11. Houghton International Inc.
12. Indian Oil Corporation Limited
13. Royal Dutch Shell PLC
14. Sinopec Limited
15. Valvoline