1. Baker Hughes Incorporated
2. BASF SE
3. Chemiphase Ltd.
4. Clariant International AG
5. Croda International PLC
6. Dorf Ketal Chemicals (I) Pvt. Ltd.
7. Ecolab Inc.
8. Halliburton Company
9. Innospec Inc.
10. MCC Chemicals Inc.
11. Momentive Performance Materials Inc.
12. NovaStar LP
13. Oil Technics Limited
14. Reda Oilfield
15. Roemex Limited
16. Schlumberger Limited
17. SI Group
18. The Dow Chemical Company