Solder pastes; alloys of common metal; crucibles of common metal and their alloys; common metal powders used in manufacturing; common metals in powder form being semi-wrought; metal ores; gold solder; hard solder; silver solder; soft solder; solder cream; solder wire; metal rods for brazing and welding; metal welding rods; tin alloy ingots; tin and its alloys; tin bars; tin ingots; brazing alloys