CONFLOW
Consilium
Contelec
Contrec
Contrinex
Controlair..
ControlAir
Convum
Corghi
Coval
Crouzet
Crowcon
Crystal Engineering
CTC Connection Technology Center
Curtis
Cutler Hammer (Eaton)
Daikin
Dalmec
Damcos
DATAKOM
Dayton Motors
Deif
Delmhorst
Delta Controls
Deltech
Demag
Denison (Parker)
Des-Case
Desoutter
Detroit Diesel