Copper wire is used as a conductor. Good electrical conductivity, a large number of used in the manufacture of wire, cable, brush, etc. Good thermal conductivity, commonly used to make magnetic instruments and instruments to prevent magnetic interference, such as compasses, aviation instruments, etc. Excellent plasticity, easy to hot pressing and cold pressure processing, can be made into tube, rod, wire, strip, belt, plate, foil and other copper materials. Pure copper products have two kinds of smelting products and processed products.