- dataTec AG
- DLR - German Aerospace Center - Institute of Engineering Thermodynamics, Germany
- DiLiCo engineering GmbH
- E+E Elektronik Ges.m.b.H.
- ebm-papst Mulfingen GmbH & Co. KG
- EE energy engineers GmbH
- EKPO Fuel Cell Technologies GmbH
- EKTechnologies GmbH, Germany
- e-mobil BW State Agency for New Mobility Solutions and Automotive Baden-Württemberg , Germany
- EP Ehrler Prüftechnik Engineering GmbH, Germany
- FEV Europe GmbH
- FEV Software and Testing Solutions GmbH
- FISCHER Fuel Cell Compressor AG, Switzerland
- Forschung Baden-Württemberg (ZSW)
- Fraunhofer Institute for Microstructure of Materials and Systems, Germany
- Fraunhofer Institute for Structural Durability and System Reliability, Germany
- Freudenberg FST GmbH
- Goetze KG Armaturen
- Graebener Bipolar Plate Technologies, Germany
- Hengst SE, Germany
- Hexagon Purus GmbH
- HOERBIGER Antriebstechnik Holding GmbH, Germany
- HPS Solutions GmbH
- Hy-Lok D Vertriebs GmbH, Germany
- Hyundai Motor Company
- Hyundai Motor Deutschland GmbH, Germany
- HZwo e.V., Germany
- Impact Coatings AB, Sweden
- Magnet-Schultz GmbH & Co. KG
- MAKINO Europe GmbH
- Matthews International GmbHMicroNova AG, Germany
- Müko Maschinenbau GmbH
- NOW GmbH, Germany
- ONEJOON GmbH
- OPTIMA life science GmbH, Germany
- Poppe & Potthoff GmbH
- Precitec GmbH & Co.KG
- Projekt- und Betriebsgesellschaft für H2 Systeme mbH
- PVT Plasma und Vakuum Technik GmbH, Germany
- Röders GmbH
- ruhlamat GmbH
- SCHERDEL Marienberg GmbH, Germany
- SITEC Industrietechnologie GmbH, Germany
- SMART TESTSOLUTIONS GmbH, Germany
- SPIR STAR AG, Germany
- Swagelok Stuttgart | B-E.S.T. Fluidsysteme GmbH, Germany
- Sydrogen Energy Private Limited
- Sydrogen Energy Pte. Ltd.
- SYMBIO