Magnesium alloy is a lightweight metal that is easy to process, reduces processing time, has fast heat dissipation, and significantly reduces the weight of finished products. Fast heat dissipation, light weight, good rigidity, certain corrosion resistance and dimensional stability, impact resistance, wear resistance, good attenuation performance, and easy recycling; In addition, it has the characteristics of high thermal and electrical conductivity, non-magnetic, good shielding, and non-toxic. Although the specific gravity of magnesium alloy is heavier than that of plastic, its strength and elasticity per unit weight are higher than those of plastic. Therefore, in the case of components with the same strength, magnesium alloy components can be made thinner and lighter than plastic components.