Installation of secondary power supply systems (electrical generators)
Building of transport and distribution lines for electricity
Terracing work: digging, grading of construction sites, opening of trenches, removal of rocks, destruction with explosives, etc.
Ground-water lowering and dredging of construction sites
Removal on construction sites
Setting of electric cables and appliances
Setting of monitoring systems and alarms against housebreakings
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.
Installation in buildings or in other projects of building of: heating, cooling and ventilation systems (except heating)
Setting of electrical installations of heating
Installation of blinds and florentine blinds
Other work of n.e.s. installation, including accessories installation
Work of general installation
Cleaning with steam, sandblasting and similar activities used on the outside of buildings
Making of repointing works
Setting of foundations, including pile hammering
Making of lifting works for third parties
Assembling and disassembling of scaffoldings and work platforms
Chimney sweeping and cleaning of hearths, ovens, incinerators, boilers, air ducts and smoke removal appliances
Installation of industrial machines, devices and equipment
Construction of civil-technical works for electricity and telecommunications
Electro-technical installation works at buildings
Installation of heating, air-conditioning and ventilation
Insulation works
Other types of building installations
Other types of cleaning activities
Electro-technical installation works, with the exception of those executed at buildings