Building of conveyance, distribution and water disposal networks
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
Work of insulation of pipes for heating or cooling
Retail trade of household appliances
Chimney sweeping and cleaning of hearths, ovens, incinerators, boilers, air ducts and smoke removal appliances
Construction of distribution facilities for water and gas
Electro-technical installation works at buildings
Installation of heating, air-conditioning and ventilation
Other types of building installations
Restoration of buildings
Retail trade in sanitary products and sanitary installation materials in specialised shops
Retail trade in other types of building materials in specialised shops
Retail trade in china, glassware, stoneware as well as in non-electric domestic products, in specialised shops
Repair of domestic devices and of equipment used in house and in the garden