Accion Systems
Aerojet Rocketdyne
Airbus S.A.S
Ariane Group GmbH
Blue Origin
IHI Corporation
Lockheed Martin Corporation
Mitsubishi Heavy Industries Ltd.
Moog Inc.
Northrop Grumman Corporation
OHB System AG
Phase Four
Safran
Space Exploration Technologies Corp. (SpaceX)
Thales Group