Aluminum extrusion is a manufacturing process where a material (typically aluminum alloy) is heated and forced through a die to create a specific cross-sectional profile. The resulting product is an aluminum extrusion profile, which is a long, uniform piece with the same cross-sectional shape along its entire length. These profiles are used in a wide range of applications, such as construction, transportation, and electronics, due to their strength, lightweight, and high resistance to corrosion.