Aluminum ingots are processed into materials by plastic processing. The main methods are rolling, extrusion, stretching and forging. Aluminum processing began to be produced in an industrial way at the beginning of the 20th century. Before the 1930s, copper processing equipment was basically used, and the products were mainly used for aircraft manufacturing. Since the 1960s, aluminum production has developed rapidly, with an annual growth of about 4-8%. The products are widely used in aviation, construction, transportation, electrical, chemical, packaging and commodity industries. The output is second only to that of iron and steel, ranking second in metal materials. In the mid-1950s, China built a relatively large aluminum processing plant and formed a production system. The products have been serialized. There are seven alloy series, which can produce eight categories of products: plate, strip, foil, pipe, bar, profile, wire rod and forgings (free forgings and die forgings).