Installation of secondary power supply systems (electrical generators)
Building of transport and distribution lines for electricity
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.
Setting of electrical installations of heating
Installation of signs, lighted or not
Creation and setting of advertisements: posters, advertising signs, lighting newspapers, lighting signs, display on buses, etc.
Repair of electronic devices
Installation of industrial machines, devices and equipment
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
Retail trade in lighting products in specialised shops
Other types of publishers
Services with regard to security systems
Installation of heating, air-conditioning and ventilation
Other types of building installations
Retail trade in other types of building materials in specialised shops