Aluminum plate refers to the aluminum material with a thickness of more than 0.2mm to less than500mm, a width of more than 200mm, and a length of less than 16m. Aluminum plate refers to a rectangular plate processed by rolling aluminum ingots, which is divided into pure aluminum plate, alloy aluminum plate, thin aluminum plate, medium-thick aluminum plate, and patterned aluminum plate. Divided by alloy composition: High-purity aluminum plate (rolled from high-purity aluminum with a content of more than 99.9%) Pure aluminum plate (the composition is basically rolled from pure aluminum) Alloy aluminum plate (composed of aluminum and auxiliary alloys, usually aluminum-copper, aluminum-manganese, aluminum-silicon, aluminum-magnesium, etc.) Composite aluminum plate or welded plate (special-purpose aluminum plate material obtained by compounding multiple materials Aluminum-clad aluminum plate (aluminum plate is clad with thin aluminum plate for special purpose)