Installation in buildings or in other projects of building of: heating, cooling and ventilation systems (except heating)
Installation of heating, air-conditioning and ventilation
Roofing
Making walls waterproof
Repair and maintenance of house boilers
Work of maintenance and mechanical repairs for third parties
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.
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
Development of projects requiring acoustic engineering, technics of air-conditioning, cooling, refrigeration, sanitation and fight against pollution, etc.