Design, building and installation of piping networks, including a complementary treatment of pipes to realize mainly pipes or networks under pressure
Repair and maintenance of house boilers
Building of conveyance, distribution and water disposal networks
Building of gas, fuel transport networks, 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)
Building of coolers, vaults, etc.
Chimney sweeping and cleaning of hearths, ovens, incinerators, boilers, air ducts and smoke removal appliances
Production of steam boilers, with the exception of boilers used in central heating
Electro-technical installation works, with the exception of those executed at buildings
Plumbing works
Installation of heating, air-conditioning and ventilation
Insulation works
Construction of chimneys and mantelpieces
Construction of civil-technical works for liquids
Construction of civil-technical works for electricity and telecommunications
Retail trade in electronic domestic devices in specialised shops
Other types of cleaning of buildings; industrial cleaning
Electro-technical installation works at buildings
Wholesale in other building materials
Do-it-yourself businesses and d.i.y. shops of common building materials