Copper wire is generally copper wire and acid resistant copper wire. At the beginning of this century, the development of copper wire for the development of modern industry and scientific and technological progress laid an important material technology foundation. There are many kinds of copper wire, different performance, it has gradually formed a few categories in the development process. Austenitic copper wire, martensite copper wire (including precipitation hardening copper wire), ferritic copper wire, and austenitic ferrite two-phase copper wire and other four categories. Copper wire keeps the surface clean, so it conducts heat better than other metals with higher thermal conductivity. The surface of copper wire is bright and clean, with high plasticity, toughness and mechanical strength, resistant to corrosion of acid, alkali gas, solution and other medium. It is an alloy wire that does not rust easily.