High-Rise Construction, Residential Construction, Commercial Construction, Industrial Construction, Hydraulic Engineering Construction, Irrigation / Drainage Construction, Highway Construction, Asphalting, Water-Supply Construction, Sewage Construction, Earthworks, Demolition, Melioration Systems, 03.04. Residential / Commercial and Industrial Buildings, Category 1 (03.04), 03.05. Power Supply (Internal and External Power Supply and Lighting Networks / Power Supply Systems / Photovoltaic and Wind Power Plants), Category 1 (03.05), 03.06. HVAC / Gas Supply, Category 2 (03.06), 03.07. Hydraulic Structures, Category 1 (03.07), 03.08. Water Supply and Drainage / Melioration Systems, Category 1 (03.08), 03.09. Transportation Structures and Highways (Roads and Railways / Airports / Bridges / Tunnels / Overpasses / Retaining Walls etc.), Category 1 (03.09), 03.10. Communication Systems (Telecommunication and Signaling Systems / Transmitters / Receivers / Antennas / Amplifiers), Category 3 (03.10)

High-Rise Construction, Residential Construction, Commercial Construction, Dwelling House / Mansion Construction, Industrial Construction, Hydraulic Engineering Construction, Greenhouse Construction, Telecommunication Facilities / Network Construction, Water-Supply Construction, Sewage Construction, Industrial / Commercial Modular Construction, Steel Building Construction, Prefabricated Construction, Ventilation Systems Installation, Air-Conditioning Installation, Water Supply / Sewage Work - Indoor / Plumbing, Water Supply / Sewage Work - Outdoor, Pumping Station Construction, Melioration Systems, Electrical Work / Indoor, Electrical Work / Outdoor, Wind Power Plants, Burglar Alarm Installation, Video Surveillance, Fire Alarm Installation, Fire Suppression Installation, Access Control Systems, Smart House Systems, Intercom Systems / Local Networks, Telecommunication and Signaling Systems, Processing Equipment Erection, Metal Work, Electric Welding, Lightning Rods Installation, 03.04. Residential / Commercial and Industrial Buildings, Category 1 (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), 03.07. Hydraulic Structures, Category 3 (03.07), 03.08. Water Supply and Drainage / Melioration Systems, Category 1 (03.08), 03.10. Communication Systems (Telecommunication and Signaling Systems / Transmitters / Receivers / Antennas / Amplifiers), Category 3 (03.10)

Industrial Construction, Hydraulic Engineering Construction, Power Engineering Construction, Greenhouse Construction, Sport Facilities Construction, Industrial / Commercial Modular Construction, Waterproofing, Thermal / Heat Insulation, Vapor Sealing, Sound / Vibration Insulation, Sound Absorption / Acoustics, Rolled Flooring Installation, Special-Purpose Flooring Installation, Natural Stone Flooring, Ceramic Tile Flooring, Self-Leveling Floors, Terrazzo Mosaic Flooring, Mosaic Making, Other - Facing, Swimming Pool Construction, Sauna Construction, Residential Renovation / Finishing, Commercial Building Renovation / Finishing, Industrial / Heavy Civil Facilities Renovation / Finishing