Praxair Inc.; Air Liquide S.A.; Air Products and Chemicals Inc.; INOX Air Products Ltd.; Iwatani Corporation; Hydrogenics Corporation; Linde AG; Messer Group GmbH; Nuvera Fuel Cells; Taiyo Nippon Sanso Corporation; Caloric Anlagenbau; ?Xebec Adsorption; Showa Denko K.K. (SDK); Nel ASA; Plug Power; Ally Hitech Co. Ltd; Gulf Cryo; Teledyne Technologies