... 5.000.000pcs/year Product information for Precision forging and threading Material Steel,Zinc,Aluminum,Brass Surface Nickel plating, ... inspection before be shiped Main processes Machining,, drilling, threading, knurling. Turning, Drilling, Inspection At least 5 times of inspection during ... over 120 sets of CNC machine and punching machines, 100 sets ofinstrument lathe,2 sets of assembly line , ...