1. Air Liquide S.A.
2. Air Products and Chemicals Inc.
3. Asia Technical Gas Co Pte Ltd.
4. BASF SE
5. Bharat Petroleum Corporation Limited
6. DuPont de Nemours Inc.
7. Ellenbarrie Industrial Gases Ltd.
8. Iwatani Corporation
9. Kayaku Advanced Materials Inc.
10. Messer Group
11. NIPPON SANSO HOLDINGS CORPORATION
12. Novomer Inc.
13. PT Samator Indo Gas TBK
14. Rotarex
15. Sapio Group
16. Shin-Etsu Chemical Co. Ltd.
17. Siad Macchine Impianti S.p.A.
18. SOL SPA
19. Supreme Industries Limited
20. Taiyo Nippon Sanso Corp.
21. The Linde Group
22. Tokyo Ohka Kogyo Co. Ltd.
23. Universal Industrial Gases Inc.
24. Yingde Gases Group Co. Ltd.