Electro-technical installation works, with the exception of those executed at buildings
Wholesale in electronic materials, inclusive of material for installation
Manufacture of other electrical appliances for acoustic or visual signs: ringings, sirens, indicating boards, monitrons for protection against theft and fire
Installation of secondary power supply systems (electrical generators)
Building of transport and distribution lines for electricity
Building of lines and networks of telecommunication
Setting of monitoring systems and alarms against housebreakings
Assembling of inside and outside metallic woordworks: doors, windows, frames for windows and doors, stairs, closets for equipped kitchens, shop equipments, etc.
Protection and fight against fire
Hire and leasing of tents for exhibitions, corporate parties, etc., without operator
Production of other types of products made from metal
Production of communication devices
Construction of civil-technical works for electricity and telecommunications