u-bloxU2T Photonics AgUchihashi Estec Co LtdUctech LtdUDE CorpUlti-Mate Connector IncUltralife Batteries IncUltraVolt IncUnicom Electronic CorpUnicorn Electronics Components Co LtdUnigen CorporationUniohm CorpUnion Optronics CorpUnion Semiconductor IncUnion Technology CorpUnisonic Technologies Co LtdUnited Microelectronics CorporationUnited Monolithic SemiconductorsUnitrode CorporationUnity Opto TechnologyUniversal Microelectronics Co LtdUniversal Semiconductor IncUPI Semiconductor CorpUS Conec LtdUS Digital Sciences CorporationUsha LtdUshio Opto Semiconductors IncUTK ComponentUtron Technologies CorpUNIC MEMORYUNISOCUDOOUnictron TechnologiesUnitedSiCUniversal Lighting TechnologiesUS-Lasers Inc.USound GmbHUMCUnitpowerUNISEMUMWUnivision SemiconductorUSAKROUNI-TusrUTEKUSIUMaxconnUNEOUbibotUnisoundUNIOHMUCWaveUMOPTOUNultraleapUSRoboticsuSenlightUNITEDUn SemiconductorUNICMICROUltra TechUnicorecommUNIONMEMUniStrongUniontechUTXUCSUWEUXfasticUNIUCchipUMPCOUltraChipUniStarUCBUtrasenseUANTUGREENUEUPTUNSIU-NIKCUPMICROU-LINKUDinfoUnionmanUnicomsemiULTRASILICONUHV-POWERULTraceptionUIYUnited Radiant Technology CorporationUnipowerunigroupucundatautlimitedUniversal ElectronicsUDF US Toyo Fanus electronicsultra level tech co., ltd.Upside Down LabsunitenseuniriseuvsemiconUnitend UNIQ