Description: [ Non-metallic construction materials and construction elements, particularly of glass, for facades, doors, windows and walls; doors, windows and walls, mainly or primarily of glass, including for thermal insulation, firebreaks, flame screens and anti-theft protection, and parts and accessories thereof; facades consisting of facade elements, doors and windows, mainly or primarily of glass ]; Metallic construction materials and construction elements, namely, steel frames and profiles for facades, doors, windows and walls; doors, windows and walls, all mainly or primarily of steel, namely, for thermal insulation, firebreaks, flame screens and anti-theft protection, and structural parts and accessories thereof; facades consisting of facade elements, doors and windows, all mainly or primarily of steel; cold-rolled and cold-drawn steel pipes, in profiled form; Construction, installation, building and repair of facades, doors, windows and walls and of structural elements thereof, all mainly or primarily of steel or of glass, and consulting services relating thereto; Scientific and technological services, namely, research and design in the field of doors, windows, walls and facades of steel and glass
