Brushed aluminum plate is a repeated use of sandpaper to scrape the aluminum sheet of the manufacturing process, its process is mainly divided into stripping, sand mill, washing 3 parts. In the aluminum sheet wire drawing process, after the anode treatment of the special skin membrane technology, can make the surface of the aluminum plate to produce a layer containing the metal composition of the film, the clear appearance of each tiny trace of silk, so that the metal matte light in the fine hair luster. In recent years, more and more aluminum sheet metal shell has been used metal wire drawing process, in order to play a beautiful, erosion-resistant role. Make the product both fashion and technology elements. This is one of the reasons for the popularity of the process. In the process of receiving the pressure of aluminum plate, under the external force, the aluminum plate is forced through the mould, the metal cross-section area is compressed, and the technical processing method of the required cross-sectional area shape and size is obtained, which is called the aluminum sheet drawing process. A tool for changing the shape of an aluminum plate is called a wire drawing die.