Lighting Systems, Power Supply Systems Installation, Renewable Energy Supply / Installations, Solar Energy Systems / Solutions, Other - Electric Supply / Lighting - Solar water heaters, 03.04. Residential / Commercial and Industrial Buildings, Category 3 (03.04), 03.05. Power Supply (Internal and External Power Supply and Lighting Networks / Power Supply Systems / Photovoltaic and Wind Power Plants), Category 3 (03.05)

Steel Building Construction, Prefabricated Construction, Electrical Work / Indoor, Electrical Work / Outdoor, Renewable Energy Supply / Installations, Solar Energy Systems / Solutions, Thermal / Heat Insulation, Corrugated Sheet Roofing, Sheet Metal Roofing, Ventilated Facades Installation, Siding

Burglar Alarm Installation, Video Surveillance, Fire Alarm Installation, Fire Suppression Installation, Access Control Systems, Intercom Systems / Local Networks, 01.10. Communication Systems (Telecommunication and Signaling Systems / Transmitters / Receivers / Antennas / Amplifiers), Category 1 (01.10), 03.10. Communication Systems (Telecommunication and Signaling Systems / Transmitters / Receivers / Antennas / Amplifiers), Category 1 (03.10)

Earthworks, Demolition, Heavy Construction Equipment Rental, Excavators, Backhoes, Mini Excavators, Bulldozers, Hydraulic Breakers, Wheel Loaders, Drilling Trucks, Trucks