1. Ashland Inc.
2. Aubin Ltd. by Italmatch Chemicals
3. Barkom Group Inc.
4. BASF SE
5. Borregaard ASA
6. Chevron Phillips Chemical Company LLC
7. Clariant International Ltd
8. Elkem ASA
9. Enventives
LLC
10. Global Drilling Fluids and Chemicals Limited
11. Halliburton Energy Services Inc.
12. Hexion Inc.
13. INEOS AG
14. Innospec Pr?fsystem GmbH.
15. Kemira Oyj
16. Newpark Resources Inc.
17. Nouryon Chemicals Holding B.V.
18. Petrochem USA Inc.
19. Schlumberger Limited
20. Sekisui Chemical Co. Ltd.
21. SEPCOR Inc.
22. Solvay S.A.
23. Tytan Organics Pvt. Ltd.
24. Unikem Laboratories LLP
25. Universal Drilling Fluids LLP