Foam aluminum is produced by adding additives to pure aluminum or aluminum alloys and then through a foaming process. It combines metal and bubble characteristics, being a lightweight porous metal material with countless bubbles based on aluminum. It is also a new type of strategic functional structural material. Foam aluminum has good sound insulation, cushioning, electromagnetic shielding, fire resistance, and electromagnetic wave protection properties. It can be widely used in the construction industry, transportation industry, machinery equipment industry, electronics industry, and other fields. Aluminum foam surface quality, aperture, color distribution uniform, smooth surface without burrs, high strength, no color difference, no hole repair.