| OBWAN NETWORKS AND SERVICES | MADRID |
| OC CONSTRUCCIONES RODISA | MADRID |
| OC HELP U ASSESSOR | MADRID |
| OC WELLNESS | MADRID |
| OC Y ASOCIADOS 2015 | MADRID |
| OC&MG ECONOMICS | MADRID |
| OC-09 | MADRID |
| OCA & ENTECOI | MADRID |
| OCA 2005 | MADRID |
|
|
| OCA 7 PRODUCCIONES | MADRID |
| OCA CONSULTORIA TECNICA ESPECIALIZADA | MADRID |
| OCA CORPORATE SERVICES | MADRID |
| OCA GLOBAL INVESTMENTS | MADRID |
| OCA INSPECCION CONTROL Y PREVENCION | MADRID |
| OCA INSPECCION TECNICA DE VEHICULOS | MADRID |
| OCA INSTITUTO DE CERTIFICACION | MADRID |
| OCA INTERNATIONAL INSPECTION & CONTROL SOCIETY | MADRID |
|
|
| OCA ORIENTE | MADRID |
| OCA SIETE | MADRID |
| OCA SOCOTEC | MADRID |
