Xintao can process a variety of materials, such as AL, Cu, steel, POM, ABS, etc. Generally, we will do different surface treatment for AL materials to prevent rust, such as oxidation, painting, nickel plating, etc. The choice of material for cnc machining polycarbonate depends on the specific requirements of the project, including the desired strength, weight, cost, and appearance. https://www.xinya-cnc.com/cnc-machining-material/All Rights Reserved