Installation of secondary power supply systems (electrical generators)
Building of transport and distribution lines for electricity
Setting of electric cables and appliances
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.
Setting of electrical installations of heating
Assembling of frames
Works of recovering in all materials
Setting of rainwater disposal elements
Trade intermediaries for electric and electronic equipments, including installation equipments for industrial use
Installation of industrial machines, devices and equipment
Electro-technical installation works at buildings
Electro-technical installation works, with the exception of those executed at buildings
Plumbing works
Roofing
Intermediation of furniture, domestic products and ironwork
Installation of heating, air-conditioning and ventilation