Its purpose is the manufacturing of concrete crossbeams for High-Speed railway lines.

It is involved in the design and construction of water treatment plants and other environmental processes.

A company involved in the manufacturing of emulsions modified bituminous tars.

A services company involved in the operation and maintenance of water treatment plants, in the collection of SUW and the maintenance of Green Zones.

It operates SUW cleaning and collection contracts in Chile. Furthermore, it develops and runs underground car parks in the same country.

Its purpose is the extraction and crushing of sand and cement for construction: manufacturing of concrete, bituminous mixes and ballast for railway lines.

A concessionaire company whose contract covers the construction, operation and preservation of the Salnés Motorway.

A concessionaire company whose contract covers the construction, operation and preservation of the Orense-Celanova Motorway.