• 

  Totoku Electric

• 

  Tuboki Motopl

• 

  Uchida Yoko Hydraulic Products

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  Uni Lok

• 

  Vac-U-Lok

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  wepro-prokont

• 

  Wh Cooke

• 

  Whitey (part of Swagelok)

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  YAMAMOTO KOUKI

• 

  Yokohama Pneumatic Hydraulic Hoses-Fittings