The final technological process of NC machining: 1 The customer provides 3D and 2D drawings, and checks whether the drawings are consistent and the accuracy is controllable. Programming engineers write programs according to the shape of materials to give the specifications and dimensions of materials. 3CNC master manipulator carries out warehouse picking processing on the machine. After disembarking, QC department calipers, needle gauges measure holes and plug gauges detect tooth holes. If 3D is required, a 3D report is required. Five professional packers are responsible for packaging and transportation.