Installation of secondary power supply systems (electrical generators)
Building of transport and distribution lines for electricity
Setting of electric cables and appliances
Setting of telecommunication systems and computer installations
Setting of monitoring systems and alarms against housebreakings
Setting of lighting and signalling systems for roads, railroads, port and airport installations (including the setting of notice boards)
Other work of n.e.s. installation, including accessories installation
Setting of electrical installations of heating
Electro-technical installation works at buildings
Electro-technical installation works, with the exception of those executed at buildings
Carpentry
Installation of signs, lighted or not
Repair and maintenance of house boilers
Work of general installation
Installation of lifts and escalators
Activities of advice in architecture given to developer
Installation of industrial machines, devices and equipment
Construction of residential buildings
Construction of office buildings
Construction of other types of non-residential buildings
Installation in buildings or in other projects of building of: heating systems by electricity, gas and fuel, boilers, materials and pipes for ventilation and air conditioning, etc.
Installation in buildings or in other projects of building of: heating, cooling and ventilation systems (except heating)