1. A-Gas International Limited
2. Chevron Phillips Chemical Company LLC
3. Cosutin Industrial Co. Limited
4. Del Amo Chemical Company Inc.
5. Dymatic Chemicals Inc.
6. EQX Materials Sdn Bhd
7. Gihi Chemicals Co. Limited
8. Haihang Industry Co. Ltd.
9. Haldia Petrochemicals Limited
10. HCS Group GmbH
11. Honeywell International Inc.
12. Ineos Group Holdings S.A.
13. LG Chem Ltd.
14. Liaoning Yufeng Chemical Co. Ltd.
15. Maruzen Petrochemical Co. Ltd.
16. Merck KGaA
17. Mil-Spec Industries Corporation
18. National Analytical Corporation
19. Polycraft Puf Machines Pvt. Ltd.
20. Pure Chem Co. Ltd.
21. Santa Cruz Biotechnology Inc.
22. SceneWay Petroleum Chemical Co. Ltd.
23. Sinteco S.r.l.
24. SK Geo Centric Co. Ltd.
25. Sumitomo Chemical Co. Ltd.
26. Trecora Resources
27. Yeochun NCC Co. Ltd.