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.
Setting in buildings or other projects of building of: wall recoverings or tiles in ceramic, in concrete or in freestones; floorings and wall recovering in granites, etc.
Construction of residential buildings
Construction of office buildings
Construction of other types of non-residential buildings
Plumbing works
Installation of heating, air-conditioning and ventilation
Laying of floor and wall tiles
Wholesale in floor and wall tiles
Retail trade in floor and wall-tiles in specialised shops