1. 3W International GmbH
2. Advanced Innovative Engineering Ltd.
3. Ballard Power Systems Inc.
4. H3 Dynamics Holdings Pte. Ltd.
5. Hirth Engines GmbH
6. Honeywell International Inc.
7. LaunchPoint Electric Propulsion Solutions Inc.
8. Orbital Corporation Limited
9. Rolls-Royce plc
10. Rotron Power Ltd.
11. RTX Corporation
12. SAFRAN SA
13. Suter Industries AG
14. Thales Group