1. 3M Company
2. Alfa Chemistry
3. ALTANA Group
4. Arya Chem Inc.
5. AUS Wax Pty. Ltd.
6. AWAX Group
7. BASF SE
8. Calumet Specialty Products Partners
L.P.
9. CALWAX
10. Cepsa Comercial Petr?leo
S.A.U.
11. COSCHEM CO. LTD.
12. Eni S.p.A.
13. Evonik Industries AG
14. Exxon Mobil Corporation
15. H&R Group
16. HollyFrontier Corporation
17. Honeywell International Inc.
18. Ilumina Wax d.o.o.
19. Indian Oil Corporation Limited
20. Innospec Inc.
21. Kemipex
22. Lion Chemtech Co. Ltd.
23. Lubrizol Corporation
24. Lukoil Company
25. Marcus Oil & Chemicals Private Ltd.
26. Mitsui Chemicals Inc.
27. Nippon Seiro Co. Ltd.
28. Petr?leo Brasileiro S.A
29. Redox Ltd.
30. Sanyo Chemical Industries Ltd.
31. Sasol Ltd.
32. SCG Chemicals Public Company Limited
33. Shell PLC
34. TER Chemicals GmbH & Co. KG
35. The Dow Chemical Company
36. The International Group Inc.
37. Trecora Chemicals