They are ingots made from scrap aluminum and aluminum alloy materials recovered through remelting. The composition and properties of recycled aluminum ingots vary depending on the source of the raw material. It can be used as a substitute for primary aluminum in many areas such as construction, automotive parts and foundry, provided it meets certain quality standards. The use of recycled aluminum ingots helps to save energy and reduce the impact on the environment. It is an important way to realize the recycling of aluminum resources.