the services, subject to this contract, concern the maintenance of the SIRIUS tunnel inverters and energy workshops of the non-concession national road network of Île-de-France managed by Dirif, as well as the supply of the parts necessary for their maintenance

the services, subject to this contract, concern the maintenance of the tunnel inverters and SIRIUS energy workshops of the non-concession national road network of Île-de-France managed by the Dirif, as well as the supply of parts necessary for their maintenance