6 Props of metal, namely supports being construction elements made of metal; transportable buildings of metal; fittings of metal for building, namely metal pipe fittings, metal joinery fittings, metal hose fittings, sockets, threaded studs, couplers, buttons, ring-shaped fittings of metal, square-shaped fittings of metal; wire gauze; fittings of metal for furniture, namely, fittings of metal in the nature of metal plates, pipes, and assemblies for joining and supporting furniture parts; non-electric metal locks; metal displays, namely trade show display booths and portable trade show displays booths made of metal; common metals, unwrought or semi-wrought, namely alloyed iron, aluminum, aluminum ores and alloys, bronze, carbon steels, cast iron, chrome, chrome ores and alloys, cobalt, cobalt ores and alloys, copper, copper ore and alloys, irons, iron ores and alloys, lead, lead ores and alloys, magnesium, magnesium ores and alloys, molybdenum, molybdenum ores and alloys, nickel, nickel ores and alloys, steels, stainless steels, tantalum, tantalum ores and alloys, tin, tin ores and alloys, titanium, titanium ores and alloys, zinc, zinc ores and alloys; signboards of metal; posts of metal