1. Accion Systems Inc.
2. Aerojet Rocketdyne Holdings Inc.
3. Airbus SAS
4. Ariane Group GmbH
5. AST Advanced Space Technologies GmbH
6. Blue Origin Enterprises
L.P.
7. Bradford Engineering B.V.
8. Busek Co. Inc.
9. Enpulsion GmbH
10. IHI Corporation
11. L3Harris Technologies Inc.
12. Maxar Technologies Holdings Inc.
13. Mitsubishi Heavy Industries
14. Moog Inc.
15. Northrop Grumman Corporation
16. OHB System AG
17. RAM Company
18. ROCKET LAB USA
19. Safran S.A.
20. Sierra Nevada Corporation
21. Thales Group
22. The Boeing Company
23. VACCO Industries Inc.