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 of blinds and florentine blinds
Cleaning with steam, sandblasting and similar activities used on the outside of buildings
Making of repointing works
Installation of industrial machines, devices and equipment
Construction of residential buildings
Construction of office buildings
Construction of other types of non-residential buildings
Electro-technical installation works at buildings
Electro-technical installation works, with the exception of those executed at buildings
Installation of heating, air-conditioning and ventilation