Aluminum coil is made by pressing aluminum material, and the main process includes de esterification, sand grinding, water washing, etc. During the production process, the aluminum coil material after anodizing is very good, which can generate a skin film layer containing the metal component on the surface of the aluminum coil, resulting in a fine luster in the metal matte. More and more products are using aluminum coils as their protective shells. Under external forces, the aluminum coils are forced through the mold, compressing their metal cross-sectional area, allowing us to obtain the required cross-sectional shape and size of the aluminum coils.
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