U

• 
  U.S. Toyo Fan Corporation
• 
  UCHIHASHI
• 
  Ulti-Mate Connector
• 
  Ultra Librarian
• 
  Ultrahaptics
• 
  Ultraleap
• 
  Ultralife
• 
  UMaxconn
• 
  UMEC INTERNATIONAL
• 
  Unexpected Maker
• 
  UNI-ROYAL(厚声)
• 
  Uniband Electronic Corp(UBEC)
• 
  UNIOHM/ROYALOHM
• 
  Unirise USA
• 
  Uniroyal Electronics
• 
  Universal Electronics Inc. (UEI)
• 
  Universal Microelectronics
• 
  Upside Down Labs
• 
  UrsaLeo
• 
  US Digital
• 
  US-Laser
• 
  US-Lasers
• 
  USAKRO(美韩)
• 
  USSMANN(库柏)