| CADIOU CH. PLASTIQ |
| CALPEDA POMPES |
| CAP SYSTEMS |
| CARSO CAE |
| CD-CÔTES D'ARMOR |
| CDI Tech / Village Innovation |
| CEGELEC DEFENSE |
| CEREG INGENIERIE / Village Innovation |
| CEREMA |
| CERIB / Village Béton |
| CHEMDOC WATER / Village Innovation |
| CIFEC |
| CIFFA SYSTEMES |
| CIMBETON / Village Béton |
| CINTROPUR |
| CIR CHLORATION |
| CISE TP / Les Canalisateurs |
| CODITAL |
| CODRA |
| COFUNCO |
| COHIN / Village Innovation |
| COHIN ENVIRONNEMENT |
| COMETEC |
| COMPOSE IT / Village Innovation |
| CONNEXION 21 |
| CP COMPOSITES |
| CREA STEP |
| CREACTIV POMPES |
| CREATEST |
| CRESEB |
| CRP / Village Béton |
| CSTB |
| CTF FRANCE SAURON |
| CUBIS SYSTEMS |
