Ores of non-precious metal; metal wedges, namely, door stops of metal; goods and materials of common metal used for storage wrapping, packaging, sheltering, and building purposes, namely, general purpose metal storage units and modular metal structures with flexible covers for agricultural, commercial or industrial storage; hardware of metal, namely, nuts, pulley, springs and washers; doors and windows of metal; ventilation ducts of metal; metal vents for HVAC ducts; metal vent covers for HVA...