Building of transport and distribution lines for electricity
Setting of electric cables and appliances
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.
Assembling of frames
Works of recovering in all materials
Setting of rainwater disposal elements
Works of leakproofing of roofs and flat roofs
Treatment of walls with waterproofing products
Construction of civil-technical works for liquids
Construction of civil-technical works for electricity and telecommunications
Insulation works
Other types of building installations
Roofing
Making walls waterproof
Other types of specialised building activities
Other types of business services
Electro-technical installation works, with the exception of those executed at buildings
Plumbing works
Installation of heating, air-conditioning and ventilation