Non-ferrous metals is the national economy, the people's daily life and defense industry, science and technology, an essential foundation for the development of materials and important strategic material. Agricultural modernization and industrial modernization, modernization of national defense and science and technology are inseparable from the non-ferrous metals. Such as airplanes, missiles, rockets, satellites, nuclear submarines and other sophisticated weapons, Atomic Energy, television, communications, radar, computers and other cutting-edge technology required component or components are made of light metal in the non-ferrous metals and precious metals, in addition, no nickel, cobalt, tungsten, molybdenum, vanadium, niobium and other non-ferrous metal alloy steel, there would be no production. Non-ferrous metals for certain uses (such as the electric power industry and so on), use is considerable. Many countries in the world, particularly developed countries, to develop non-ferrous metal industry, increase the strategic reserves of nonferrous metals.