Installation of secondary power supply systems (electrical generators)
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
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
Installation of signs, lighted or not
Installation of lifts and escalators
Trade intermediaries for supplies for plumbering, equipments of electric system for houses and heating systems
Wholesale trade of appliances for heating
Wholesale trade of equipments for sanitory systems and central heating: pipes, pipe fittings, tabs, rubber pipes, etc.
Studies and advice in urban planning and landscape architecture
Test and analyses on texture, physical characteristics, performances, compliance with reglements and standards or specifications of materials, products, installations, etc.
Creation and setting of advertisements: posters, advertising signs, lighting newspapers, lighting signs, display on buses, etc.
Chimney sweeping and cleaning of hearths, ovens, incinerators, boilers, air ducts and smoke removal appliances
Production of radiators and boilers used in central heating
Repair of metal products
Repair of electronic and optical equipment
Repair of electronic devices
Electro-technical installation works at buildings
Electro-technical installation works, with the exception of those executed at buildings
Plumbing works
Insulation works
Wholesale in installation materials used by plumbers and for the installation of heating
Do-it-yourself businesses and d.i.y. shops of common building materials
Architects
Engineers and similar technical advisors, with the exception of surveyors
Other types of technical and scientific activities
Other types of business services
Reparations of computers and peripheral devices
Repair of communication devices
Repair of domestic devices and of equipment used in house and in the garden