Manufacture of electric veneers for the capture of solar heat
Manufacture of batteries and electric batteries, including batteries for motorised vehicles
Development, assembling and maintenance of control systems in non stop industrial process
Installation of secondary power supply systems (electrical generators)
Setting of electric cables and appliances
Setting of telecommunication systems and computer installations
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.
Work of insulation of coolers or refrigerated warehouses
Trade intermediaries for supplies for plumbering, equipments of electric system for houses and heating systems
Design and realization of projects interesting electric and electronic engineering, mining, chemical and industrial engineering, the engineering of systems, security technics, etc.
Development of projects with activities related to civil or building engineering, hydraulic engineering or traffic technic
Estimate of the bill of quantities of works
Systematic studies and creation efforts in different kind of research-development in mathematics and natural sciences (physics, astronomy, chemistry, medical sciences, biology, etc.)
Production of electro motors, electric generators and transformers
Production of batteries and accumulators
Repair of electronic devices
Installation of industrial machines, devices and equipment
Production of electricity
Electro-technical installation works at buildings
Other types of building installations
Development and programming of computer programs
Other types of technical surveys and checks
Other types of photographic activities
Other types of technical and scientific activities
Other types of business services
Other types of research in the natural sciences
Engineers and similar technical advisors, with the exception of surveyors
Installation of heating, air-conditioning and ventilation