• 

  Gpi Gurley Precision Instruments

• 

  Harowe (API Delevan/Danaher/Dynapar)

• 

  Holex

• 

  Hommel Etamic

• 

  Hydro Leduc

• 

  IPF Electronic

• 

  Isoflex

• 

  J. Schneider Elektrotechnik

• 

  Keithley

• 

  Keller