1. Advance Research Chemicals Inc.
2. Air Liquide S.A.
3. Air Products and Chemicals Inc.
4. Central Glass Co. Ltd.
5. DOD Technologies Inc.
6. Kanto Denka Kogyo Co. Ltd.
7. Linde PLC
8. Matheson Tri-Gas Inc.
9. Merck KGaA
10. Mott Corporation
11. Nippon Sanso Corporation
12. Praxair Technology Inc.
13. Shandong Zhongshan Photoelectric Materials Co. Ltd.
14. Showa Denko K. K.
15. Smolecule Inc.
16. Stanford Advanced Materials
17. Suzhou Jinhong Gas Co. Ltd.
18. Taiyo Nippon Sanso Corporation
19. Vizag Chemicals
20. Wuxi Yuantong Gas Co. Ltd.