As the light weight of magnesium alloy, specific strength and specific stiffness, thermal conductivity, good damping and electromagnetic shielding performance; at the same time easy processing and molding, waste recycling; as electronic devices, such as mobile communication laptop computers Shell structure, can replace the plastic to meet the products of light, thin, small, high integration and other requirements. Therefore, magnesium and magnesium alloys become the modern automobile, electronics, communications and other industries of choice for materials, was hailed as "the 21st century green engineering materials", with broad commercial application prospects.

　　With the maturity of smelting technology, the production cost of raw magnesium is greatly reduced; the consumption of magnesium alloy smelting and recovery is lower than that of aluminum alloy, and the magnesium is easy to process and save the mold and tool, so the price of magnesium alloy per unit volume has been low In the aluminum alloy. A large number of obstacles to the application of magnesium alloy prices and technology has begun to break the two bottlenecks.

　　Magnesium alloy has been optimistic about the existence and potential market, some large foreign companies, consortia have also been spending huge sums of money to carry out research and development, in order to continuously develop new magnesium alloy die-casting technology and products to seize the market. Therefore, since the 1990s, magnesium as a rapidly rising engineering metal material, the annual rate of more than 20% to maintain rapid growth, which in modern engineering metal materials is unprecedented.