Installation of secondary power supply systems (electrical generators)
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)
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 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)
Setting of electrical installations of heating
Installation of signs, lighted or not
Installation of lifts and escalators
Trade intermediaries for supplies for plumbering, equipments of electric system for houses and heating systems
Creation and setting of advertisements: posters, advertising signs, lighting newspapers, lighting signs, display on buses, etc.
Maintenance and repair of computers and peripherical computer equipment
Maintenance and repair of account machines and other office machines
Repair of household appliances
Repair of metal products
Repair of electronic and optical equipment
Repair of electronic devices
Electro-technical installation works at buildings
Electro-technical installation works, with the exception of those executed at buildings
Wholesale in installation materials used by plumbers and for the installation of heating
Do-it-yourself businesses and d.i.y. shops of common building materials
Reparations of computers and peripheral devices
Repair of communication devices
Repair of domestic devices and of equipment used in house and in the garden
Plumbing works
Installation of heating, air-conditioning and ventilation