1. Advanced Specialty Gases Inc.
2. Air Liquide S.A.
3. Air Products and Chemicals Inc.
4. BASF SE
5. Buzwair Group
6. Cavagna Group S.p.A.
7. CIRCOR International Inc.
8. Corbett Industries Inc.
9. DuPont de Nemours Inc.
10. Emerson Electric Co.
11. ESAB Corporation
12. Gulf Cryo
13. Honeywell International Inc.
14. Itron Inc.
15. Iwatani Corporation
16. Linde PLC
17. Matheson Tri-Gas Inc.
18. Messer SE & Co. KGaA
19. Pietro Fiorentini S.p.a.
20. Precision Instrumentation Neon Controls
21. Proton Gases (India) Private Limited
22. Rotarex S.A.
23. Sutton-Garten Co.
24. Swagelok Company
25. Universal Industrial Gases Inc.