1. Afton Chemical Corporation
2. BASF SE
3. BRB International B.V.
4. Chevron Oronite Company LLC
5. Clariant AG
6. Croda International plc
7. Cummins Filtration Inc.
8. Eastman Chemical Company
9. Evonik Industries AG
10. Huntsman Corporation
11. Infineum International Limited
12. Innospec Inc.
13. Linde plc
14. Shin-Etsu Chemical Co. Ltd.
15. Solvay S.A.
16. Wacker Chemie AG
17. Zschimmer & Schwarz Chemie GmbH