The specific strength of magnesium alloy is significantly higher than that of aluminum alloy and steel, and the specific stiffness is equivalent to that of aluminum alloy and steel. In the elastic range, when the magnesium alloy is subjected to an impact load, the energy absorbed is greater than that of the aluminum alloy, so the magnesium alloy has good shock resistance and noise reduction performance. Under the same load, the damping performance is 100 times that of aluminum and 300-500 times that of titanium alloy. Good electromagnetic shielding, the casing of 3C products (mobile phone and computer) should be able to provide superior anti-electromagnetic protection, and the magnesium alloy casing can completely absorb electromagnetic interference with a frequency exceeding 100db. Good texture, the appearance and touch texture of magnesium alloy are excellent, which makes the product more luxurious, and it is not easy to corrode in the air.