Copper wire is a kind of wire shaped object made of metallic copper, which has good electrical conductivity, so it is widely used in the manufacture of wire, cable, brush and so on. Copper wire not only plays an important role in the electrical field, but also because of its excellent thermal conductivity and corrosion resistance, it is often used in the manufacture of magnetic instruments and instruments that need to prevent magnetic interference, such as compasses, aviation instruments, etc. Copper wire has good plasticity, easy to hot press and cold pressure processing, can be made into a variety of shapes, including tubes, rods, wires, strips, belts, plates, foils and so on.