Building of transport and distribution lines for electricity
Installation in buildings or in other projects of building of: pumbling systems and hygiene appliances, pipes for gas and water (except for heating), setting of automatic extinguishers, etc.
Installation in buildings or in other projects of building of: heating, cooling and ventilation systems (except heating)
Setting of electrical installations of heating
Installation of heating, air-conditioning and ventilation
Repair of metal products
Construction of civil-technical works for electricity and telecommunications