The surface of aluminum CNC machined parts can be treated by sandblasting, brushing, anodizing, etc., and various sand patterns and various colors can be made, making the appearance very beautiful. Many shells or appearance parts are processed by aluminum CNC, and the overall effect is very good, and the uniformity is also very good. Aluminum materials are easy to process, which is relatively easy to use for CNC processing, and the processing effect is very good. It can easily meet the requirements of various complex parts and products. The proportion of CNC machined aluminum parts in CNC processing is still relatively high, and the comprehensive characteristics of the parts are also relatively good.