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.
Repair of metal products
Retail trade in sanitary products and sanitary installation materials in specialised shops
Plumbing works
Installation of heating, air-conditioning and ventilation