Installation of secondary power supply systems (electrical generators)
Building of transport and distribution lines for electricity
Building of lines and networks of telecommunication
Setting of electric cables and appliances
Setting of telecommunication systems and computer installations
Setting of monitoring systems and alarms against housebreakings
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
Work of insulation of pipes for heating or cooling
Work of insulation of coolers or refrigerated warehouses
Work of general installation
Works of leakproofing of roofs and flat roofs
Building of coolers, vaults, etc.
Trade intermediaries for electric and electronic equipments, including installation equipments for industrial use
Trade intermediaries for supplies for plumbering, equipments of electric system for houses and heating systems
Test and analyses on texture, physical characteristics, performances, compliance with reglements and standards or specifications of materials, products, installations, etc.
Repair of metal products
Electro-technical installation works, with the exception of those executed at buildings
Plumbing works
Do-it-yourself businesses and d.i.y. shops of common building materials
Retail trade in sanitary products and sanitary installation materials in specialised shops
Advice agencies in regard to public relations and communication
Other types of advice agencies related to business management
Engineers and similar technical advisors, with the exception of surveyors
Other types of technical and scientific activities
Other types of business services
Other types of education
Other types of technical surveys and checks
Retail trade in other types of building materials in specialised shops
Installation of heating, air-conditioning and ventilation
Construction of civil-technical works for electricity and telecommunications