• 

  ISI Welding Systems (formerly GF Welding)

• 

  Glems technik

• 

  Go-power Sytems

• 

  Gruber Systems

• 

  Harms-Wende

• 

  Hdr Power Systems Inc

• 

  Hitachi Data Systems

• 

  Hitachi Industrial Equipment Systems

• 

  Hms

• 

  Hubbell power systems