Installation of secondary power supply systems (electrical generators)
Setting of electric cables and appliances
Setting of monitoring systems and alarms against housebreakings
Setting of lighting and signalling systems for roads, railroads, port and airport installations (including the setting of notice boards)
Setting of electrical installations of heating
Installation of signs, lighted or not
Installation of lifts and escalators
Design and realization of projects interesting electric and electronic engineering, mining, chemical and industrial engineering, the engineering of systems, security technics, etc.
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
Maintenance and repair of account machines and other office machines
Repair of audio and video appliances
Repair of household appliances
Repair of electronic devices
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
Other types of building installations
Advice agencies in regard to public relations and communication
Other types of advice agencies related to business management
Advertising agencies
Reparations of computers and peripheral devices
Repair of communication devices
Repair of consumer electronics
Repair of domestic devices and of equipment used in house and in the garden