Installation of secondary power supply systems (electrical generators)
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.
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 lifts and escalators
Setting of antennas and lightning rods
Creation and setting of advertisements: posters, advertising signs, lighting newspapers, lighting signs, display on buses, etc.
Maintenance and repair of computers and peripherical computer equipment
Repair of electronic devices
Construction of civil-technical works for electricity and telecommunications
Electro-technical installation works at buildings
Electro-technical installation works, with the exception of those executed at buildings
Installation of heating, air-conditioning and ventilation
Development and programming of computer programs
Activities with regard to computer consultancy
Other services related with information technology and computers
Various administrative services for offices
Other types of business services
Reparations of computers and peripheral devices
Repair of communication devices
Repair of consumer electronics
Wholesale in electronic materials, inclusive of material for installation