• 

  Kosaka Laboratory　Ltd

• 

  Kokosha CO. LTD

• 

  Kaneko Sangyo Co. LTD

• 

  KOSO AMERICA

• 

  Nikken Kosakusho Works Ltd

• 

  kokosha

• 

  Nihon　Koso

• 

  Kosme

• 

  Kosmon

• 

  Elko (Schneider Electric)