Installation of heating, air-conditioning and ventilation
Insulation works
Other types of building installations
Roofing
Do-it-yourself businesses and d.i.y. shops of common building materials
Manufacture of refrigerated counters
Repair and maintenance of house boilers
Making of horizontal drillings for cables or pipes
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)
Implementation in buildings or in other projects of building of: thermal insulation materials, acoustic and antivibrating insulation materials
Work of insulation of pipes for heating or cooling
Work of insulation of coolers or refrigerated warehouses
Work of general installation
Building of coolers, vaults, etc.
Installation of private swimming pools
Wholesale trade of bathroom facilities: baths, sinks, wcs, etc.
Chimney sweeping and cleaning of hearths, ovens, incinerators, boilers, air ducts and smoke removal appliances
Production of non-domestic machines and devices used for cooling and air-conditioning