NAIA

Aluminum alloys; Bronze; Copper alloys; Fittings of metal for furniture; Hinges of metal; Insect screens of metal; Metal bottle stoppers; Metal ladders; Metal padlocks; Metal palisades; Metal rolling window shutters; Metal spacer brackets; Metal strapping or tie downs; Metal water pipes; Metal hardware, namely, washers; Steel tubes; Traps for wild animals; Water-pipe valves of metal; Works of art of non-precious metal