Retail trade in sanitary products and sanitary installation materials in specialised shops
Retail trade in other types of building materials in specialised shops
Retail trade in solid, liquid and gaseous fuels, with the exception of engine fuels, in specialised shops
Manufacture of silos, tanks and similar containers in metal, of a capacity higher than 300 litres
Repair and maintenance of house boilers
Installation of secondary power supply systems (electrical generators)
Building of transport and distribution lines for electricity
Setting of electric cables and appliances
Setting of electrical installations of heating
Implementation in buildings or in other projects of building of: thermal insulation materials, acoustic and antivibrating insulation materials
Work of insulation of pipes for heating or cooling
Work of insulation of coolers or refrigerated warehouses
Wholesale trade of household electric equipments for installation
Wholesale trade of bathroom facilities: baths, sinks, wcs, etc.
Wholesale trade of appliances for heating
Wholesale trade of equipments for sanitory systems and central heating: pipes, pipe fittings, tabs, rubber pipes, etc.
Retail trade of household appliances
Retail trade of lighting appliances
Retail trade of n.e.s. household appliances and articles
Retail trade of solid fuels such as coal, heating wood, charcoal, etc.
Retail trade of liquid and gaseous fuels
Design and realization of projects interesting electric and electronic engineering, mining, chemical and industrial engineering, the engineering of systems, security technics, etc.
Production of other types of metal reservoirs, tanks and containers
Electro-technical installation works at buildings
Plumbing works
Installation of heating, air-conditioning and ventilation