Magnesium metal is widely used in automobile manufacturing, light industry, metallurgical industry, chemical industry, electronic industry and instrument manufacturing industry. The superior performance and beautiful appearance of magnesium alloys are favored by manufacturers of computers, home appliances, and mobile phones.

It has the advantages of low specific gravity, high strength per unit weight and high chemical stability, which makes aluminum-magnesium alloys and their magnesium die castings very popular, and the metal magnesium industry has developed rapidly. Magnesium alloys used in the automotive industry have the advantages of high strength, heat resistance, wear resistance and light weight, making them gradually replace plastic products and steel parts with a large proportion of automobiles in the automotive industry, mainly replacing the original engine and steering wheel. , seat base, etc. For example, there are 15 pounds (6.8 kg) of magnesium die-cast parts in the "Polaris V-8" engine of General Motors of the United States, and this engine is assembled on the Cadillac. The company produced 25,000 in the mid-1990s. ～30,000 vehicles of this kind require magnesium. The annual output of General Motors in the United States has been maintained at more than 9 million vehicles, and the production of Toyota in Japan is comparable to that of General Motors. Only these two companies have demand for magnesium alloys. The amount is enough to excite the metal magnesium production enterprises.