The CNC machining aluminium workpiece usually get good tolerance(even +/-0.002mm) and surface roughness performance(Ra 0.8). CNC machining(turning/3,4,5 axis milling/WEDM)Aluminium 2017,CNC machining Aluminum 5052, CNC machining Aluminium 6061 T6,CNC machining Aluminum 6063,CNC machining Aluminum 6082,CNC machining Aluminum 7075 T6. With a variety of surface treatment/finish such as mirror polishing,paiting,fine Bead blasting,Sand blasting,Brushing,Anodizing,Nickel Plating,Powder coating,Silk Screen,Laser Engraving,..etc.