（in Alphabetical Order）

• Air Liquide Japan G.K
  Chiyoda Corporation
  DMW Corporation
  Hitachi Industrial Products Ltd
• Hitachi Zosen Corporation
  IHI Corporation
• JFE Engineering Corporation
  JGC Corporation
  JGC Japan Corporation
  Kawasaki Heavy Industries Ltd
• Kobe Steel Ltd
  Mitsubishi Chemical Engineering Corporation
  Mitsubishi Heavy Industries Engineering Ltd
  Mitsubishi Heavy Industries Compressor Corporation
  Tokyo Power Technology Ltd
  Toyo Engineering Corporation
  Toyo Kanetsu K.K.
  Tsukishima Kankyo Engineering Ltd
  Among others