1. 3V Sigma S.p.A.
2. Adeka Corporation
3. Akrochem Corporation
4. Amfine Chemical Corporation
5. Ampacet Corporation
6. Baerlocher GmbH
7. BASF SE
8. Clariant AG
9. Dover Chemical Corporation by ICC Industries Inc.
10. Duslo
a.s. by AGROFERT
a.s.
11. Everspring Chemical Co. Ltd.
12. Evonik Industries AG
13. Krishna Antioxidants Pvt. Ltd.
14. Kumho Petrochemical Co. Ltd.
15. Lanxess AG
16. Lycus Ltd.
17. Mayzo Inc.
18. Oxiris Chemicals
SA
19. Rianlon corporation
20. SI Group Inc.
21. Solvay S.A.
22. SONGWON
23. Struktol Company of America
LLC
24. Sumitomo Chemical Company
Limited
25. Trigon Antioxidants Pvt. Ltd.