Normex
Northman
Novotechnik
Novus
Nsd
Nu-Air
NU.ER.T.
Nuova General Instruments
Obl
Ode
Oerlikon
OERRE
Ohmite
Oilite
Oil-Rite
Olab
Olaer (Parker)
Oli
Omal
Omega
OMFB Hydraulic
Omil
Omron
Omt
omt spa
Onikaze
Opengear
Opkon
Optex