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 signs, lighted or not
Installation of lifts and escalators
Building of coolers, vaults, etc.
Retail trade of lighting appliances
Installation of industrial machines, devices and equipment
Electro-technical installation works, with the exception of those executed at buildings
Installation of heating, air-conditioning and ventilation
Insulation works
Wholesale in lighting devices
Wholesale in installation materials used by plumbers and for the installation of heating
Trade in own real estate
Engineers and similar technical advisors, with the exception of surveyors
Retail trade in lighting products in specialised shops