6 metal materials used exclusively for construction of buildings, namely metal wall linings; metal pilings; metal gratings; metal window shutters; metal roll shutters; metal hinges; metal handrails and balustrades; metal ceiling panels; metal door knockers; metal gutters; metal doors; metal door handles; metal pillars; metal wire fences; metal fire doors; metal windows; metal window knobs; metal window frames; metal window pulleys; metal gates; barbed wire; metal floors; metal louver doors; metal fittings for buildings, namely metal pipe fittings; metal safes; metal safety cash boxes; metal building assembly kits containing all materials needed to construct a prefabricated building; metal folding boxes; metal turntables used for cargo handling; metal traversers, namely crossbars, used for cargo handling; metal toolboxes; metal piggy banks; metal ladders and step ladders; metal nameplates and door nameplates; fixed towel dispensers of metal; metal hat hooks; metal letterboxes; metal doormats; venetian blinds of metal; metal hardware, namely cut nails, wedges, pegs, washers, nuts, screws, tacks, plugs, bolts, rivets, link chains, locks, keys for locks, key holders, and padlocks