O.C. White
O.C.White
O2Micro
OASIS(李洲)
OCIC(卓睿科)
OCS(Orient-Chip Semiconductor)
Octavo Systems
OCX
ODU(欧度)
Ohmite
OK International(OK国际)
OKAYA
OKI
Olimex Ltd
OmniVision
OMRON
On Bright
ON Semiconductor
On-Shore Technology
Oplink
Optek Technology
optek(optek-Danulat GmbH)
Optibelt
OptiFuse
Option NV
Opto 22
Opto Diode Corporation
OptoSupply
Opulent Americas
ORIENTAL
Oriental Motor
ORIENTAL SYSTEM TECHNOLOGY
Orion Fans
Orisystech(众智)
OSEPP
OSRAM Opto Semiconductors
OTAX Electronics
Oupiin