∇O.E.P.	∇ORION
∇OBC	∇OROR
∇Oberg	∇OSG
∇OBO Bettermann	∇Oshino Lamp
∇OCM	∇OSRAM
∇odelic	∇OSS
∇ODU	∇Ottermill
∇Officine Di Esino Lario O.D.E.	∇Oxley
∇OGA	∇OYALOX
∇Ogacon	∇O-Z/Gedney
∇Ogura	∇OZAK
∇OH
∇OHM
∇Oigis Oustn
∇Oildyne
∇OILES
∇ojiyas
∇Okaheld
∇Okamura
∇okazaki
∇OKM
∇okuma
∇okura
∇OLAER
∇OLEO International
∇Olflex
∇oliver
∇OLYMPUS
∇OMRON
∇ONE-A
∇Ontec
∇OPK
∇Optekv
∇Optel
∇OPTEX
∇Optibelt
∇Opto-Diode
∇ORIENTAL
∇Orii
∇Orimvexta