O
O.ERRE / OERRE
O.M.B. Vibrator Motors
OBO Bettermann
Octagon Systems
ODE
OEG Brakes / Officina Elettromeccanica Gottifredi
OEMER
Oiltech
Olaer (brand of Parker)
Oleodinamica Marchesini
OLI
OMT
ON Semiconductor
Onka
optek-Danulat
optris
Orbinox
Orsta
Osborn / Osborn International
OSBY PARCA
OSIP Pump
OSLV
Ott Antriebe
OXFORD INSTRUMENT
