1. Air Products and Chemicals Inc. by Evonik Industries AG
2. Airpack Holding B.V.
3. Atlas Copco AB
4. Claind S.R.L.
5. Compressed Gas Technologies Inc.
6. Erredue S.P.A.
7. Gaztron Engineering Pvt. Ltd.
8. Generon
9. Hitachi
Ltd.
10. Ingersoll Rand
11. INMATEC GaseTechnologie GmbH
12. Linde PLC
13. NOVAIR S.A.S
14. Omega Air
15. Oxywise
16. Parker-Hannifin Corporation
17. Peak Gas Generation