8 series aluminum foil is an aluminum alloy material whose main component is aluminum and usually contains a small amount of alloying elements such as copper, manganese, magnesium and silicon. It has excellent moisture-proof performance, light-shielding performance and extremely high barrier capacity, and can effectively protect the inner material from the external environment. 8021 aluminum foil is a high-purity aluminum alloy material in the 8 series aluminum foil. It has excellent moisture resistance, electrical conductivity, thermal conductivity and other properties. It is widely used as packaging materials after compounding, printing and gluing, such as video packaging, electronic product packaging, etc.