Setting of telecommunication systems and computer installations
Setting of electrical installations of heating
Setting of antennas and lightning rods
Installation of secondary power supply systems (electrical generators)
Catching, purification and distribution of water
Building of transport and distribution lines for electricity
Building of settling tanks and other devices for water disposal
Electro-technical installation works at buildings
Other types of specialised building activities
Wholesale in electronic materials, inclusive of material for installation
Retail trade in electronic domestic devices in specialised shops
Do-it-yourself businesses and d.i.y. shops of common building materials
Ground-water lowering and dredging of construction sites
Design and realization of projects interesting electric and electronic engineering, mining, chemical and industrial engineering, the engineering of systems, security technics, etc.
Development of projects requiring acoustic engineering, technics of air-conditioning, cooling, refrigeration, sanitation and fight against pollution, etc.
Development of projects with activities related to civil or building engineering, hydraulic engineering or traffic technic