1. Air Liquide S.A.
2. Air Products and Chemicals Inc.
3. Ellenbarrie Industrial Gases Ltd.
4. Iwatani Corporation
5. Linde Plc
6. Matheson Tri-Gas Inc.
7. Messer SE & Co. KGaA
8. nexAir
LLC
9. Nippon Helium Inc.
10. Noble Helium Limited
11. North American Helium Inc.
12. SIAD S.p.A.