Residential and Commercial Construction Other Activities - Design and construction of wastewater treatment facilities, Hydraulic Engineering Construction, Water-Supply Construction, Sewage Construction, Industrial and Heavy Civil Construction Other Activities - Design and construction of wastewater treatment facilities, Prefabricated Construction, Water Supply / Sewage Work - Indoor / Plumbing, Water Supply / Sewage Work - Outdoor, Pumping Station Construction, Water Treatment, Other - Water Supply / Sewage / Natural Gas Supply - Design and construction of wastewater treatment facilities / Water Supply / Outdoor Water Treatment

High-Rise Construction, Residential Construction, Commercial Construction, Dwelling House / Mansion Construction, Rebuilding / Remodeling, Industrial Construction, Heavy Civil Construction, Hydraulic Engineering Construction, Power Engineering Construction, Highway Construction, Asphalting, Power Line Construction, Water-Supply Construction, Sewage Construction, Industrial / Commercial Modular Construction, Residential Modular Construction, Earthworks, Demolition, Heating Systems Installation, Ventilation Systems Installation, Air-Conditioning Installation, Water Supply / Sewage Work - Indoor / Plumbing, Water Supply / Sewage Work - Outdoor, Melioration Systems, Electrical Work / Indoor, Electrical Work / Outdoor, Lighting Systems, Power Supply Systems Installation, Wind Power Plants, 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 1 (03.06), 03.08. Water Supply and Drainage / Melioration Systems, Category 2 (03.08), 03.09. Transportation Structures and Highways (Roads and Railways / Airports / Bridges / Tunnels / Overpasses / Retaining Walls etc.), Category 2 (03.09)