As a subcontractor, Othua provides services to large companies in the construction, public works, and metallurgical sectors.
- Connection and start-up of an incineration factory: Issy-les-Moulineaux
- Supplier management and follow-up for the installation of optical fibre: A86/A89 tunnels
- Reflectometry validation and creation of measurement records: A89 motorway
- Connection and start-up of an automatic guidance system: carparks of the Kremlin Bicêtre shopping and business centre
- Engineering, construction and supply of the entire routing and lighting systems of an industrial building
- Installation of cable runways and cable connection for various customers in the tertiary sector