Residential Construction, Dwelling House / Mansion Construction, Rebuilding / Remodeling, Industrial Construction, Hydraulic Engineering Construction, Sport Facilities Construction, Gas Pipeline Construction, Water-Supply Construction, Earthworks, Water Supply / Sewage Work - Indoor / Plumbing, Water Supply / Sewage Work - Outdoor, Natural Gas Supply

Special-Purpose Flooring Installation, Self-Leveling Floors, Floor Screeding (Cement-Sand), Terrazzo Mosaic Flooring, Other - Facing, Natural Stone Stairs

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)