Calo-Rex
Calorgas
Calpam
Caltex
Caratgas
Cargas
Castrol
Catry Freres
Cepsa
Chantier Houiller
Chauffetout
Chevron
Chibel
Clan 3
Classic Oil
Cokerill-Ougrée
Combugaz
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Cometane
Comma
Comtoir Houiller
Conoco
Coppens
Corthals
Croonen