The trade, design and installation of sanitary and heating systems, thermal, ventilation, air conditioning, alternative energy and solar energy, water supply systems, swimming pools and garden irrigation systems, as well as electrical works and installations, sheet metal work, insulation, kitchen fittings, repairs, calculations and estimates, management of a technical office, maintenance of boilers, burners and whirlpools. The company may also acquire and sell participations in other companies, take on and assign contracts to third parties.