Tungsten ore.
Tantalum concentrated ore.
Tin ingots.
Zinc slab.
Raw cobalt.
Brass scrap.
Nickel wire.
Nickel wire.
Steel drums.
Iron ore.
Steel tire wire scrap.
Copper wires.
Iron ore.
Copper powder.
Copper cathode.
Mercury.
Tantalum or coltan.
Power transformer, conductors, isolators,busbars, lightning arrestors, circuit breakers, relays, capacitor banks, batteries.
Coal, copper cathode, copper concentrate, iron ore, chrome ore, scrap paper, scrap copper wire.
Lithium carbonate.