Installation of secondary power supply systems (electrical generators)
Building of conveyance, distribution and water disposal networks
Making of horizontal drillings for cables or pipes
Setting of electric cables and appliances
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
Making of all submarine works
Chimney sweeping and cleaning of hearths, ovens, incinerators, boilers, air ducts and smoke removal appliances
Repair of metal products
Electro-technical installation works at buildings
Electro-technical installation works, with the exception of those executed at buildings
Plumbing works
Installation of heating, air-conditioning and ventilation
Insulation works
Other types of building installations
Restoration of buildings
Other types of specialised building activities
Engineers and similar technical advisors, with the exception of surveyors
Other types of technical and scientific activities
Various ancillary activities in regard to housing facilities
Reparations of computers and peripheral devices
Repair of communication devices
Repair of consumer electronics
Repair of domestic devices and of equipment used in house and in the garden
Repair of other types of consumer goods
Repair of electronic and optical equipment
Repair of electronic devices
Installation of industrial machines, devices and equipment
Construction of distribution facilities for water and gas
Construction of civil-technical works for electricity and telecommunications