1. Air Products and Chemicals Inc.
2. AREVA H2Gen
3. Asahi Kasei Corporation
4. Enagic Co. Ltd.
5. Enapter S.r.l.
6. Hitachi Zosen Corporation
7. Hydrogenics Corporation by Cummins Inc.
8. HyGear B.V
9. ITM Power PLC
10. John Cockerill S.A.
11. L’AIR LIQUIDE S.A.
12. Nel ASA
13. Ohmium International Inc.
14. PEAK Scientific Instruments Ltd.
15. Siemens Energy Global GmbH & Co. KG
16. Sono-Tek Corporation
17. Teledyne Energy Systems Inc.
18. Thyssenkrupp Uhde Chlorine Engineers GmbH
19. Toshiba Energy Systems & Solutions Corporation