6 copper, unwrought or semi-wrought; copper wire not insulated, copper rings, brass unwrought and partly processed; tombac, namely, an alloy of copper and zinc; bronze, bronze works of art; alloys of common metal; nickel, nickel-silver alloys; German silver, silver solder; tin, tin alloys, tin plating; aluminum, aluminum wires, aluminum foils, aluminum plating; foils of metal for packaging, plates of metal; tile floorings of metal; metal powders, namely, aluminum and bronze powders in granulate form; and metal pastes, namely, aluminum and bronze pastes in granulate form for aqueous systems