Before anodizing, aluminum profiles need to undergo sandblasting pretreatment. Sandblasting is an operation method that uses purified compressed air to spray dry sand onto the surface of aluminum products, thereby removing surface defects and presenting a uniform and matte sand surface on aluminum profiles. Sandblasting can remove burrs, casting slag, and other defects and deposits on the surface of aluminum profiles. CNC assemble Aluminium Profile is a type of Industrial Aluminum Profile that is assembled according to design drawings after precise cutting, drilling, milling, and other processing using computer numerical control technology. This process can ensure the accuracy and quality of aluminum profiles,greatly improving production efficiency and product accuracy. CNC assemble aluminium profile is widely used in industries including construction and automotive part. Nowaday, CNC assemble aluminium profile play more and more important role in industry. With more than 30 years of industry experience, we have set high standards for the manufacturing of Assemble aluminum profile.