6 Aluminum, other non-ferrous metals and related alloys, in the form of sheets, coils, foils, and drawn profiles including metal building system parts, namely aluminum, other non ferrous metals and related alloys in the form of sheets, coils, foils, and drawn profiles for the production of metal window frames, door frames, suspended ceiling, wall and facade sidings, having raw or finishing surfaces, treated in various ways, namely, painted, lacquered, anodized, etched, colored, laminated, coupled, insulated, embossed or silkened, all in international class 6¿