• 

  Hitachi Metals America Ltd

• 

  Wichitech industries

• 

  Hitech

• 

  Hitachi Automotive

• 

  Hitachi Industrial Equipment Systems Co.,Ltd.

• 

  Hi-tex

• 

  Mitsubishi-Hitachi Metals Machinery, Inc.

• 

  Graphite Plate

• 

  AICHI TOKEI

• 

  HITACHI MAXELL