Megadyne
Meister
Merlett
Merten (Schneider Electric)
Messer
Metrix
Meyle
Miller Stephenson
Merck
Mindman
Minitec
Misumi
Miunske
Müller
Moeller (Eaton)
Molex
Mollet
Monarch Instrument
Monitran
Montwill
Motec
Motometer
MP Filtri
Msa
Mulco
Multi-Contact (Stäubli)
Murphy
Murrplastik
Murtfeldt
Mycom