... 000.000pcs/year Product information for Precision forging and threading Material Steel,Zinc,Aluminum,Brass Surface Nickel plating, zinc ... 100% inspection before be shiped Main processes Machining,, drilling, threading, knurling. Turning, Drilling, Inspection At least 5 times of ... of CNC machine and punching machines, 100 sets ofinstrument lathe,2 sets of assembly line , manufactured under ISO9001:2008 ...