... List:one set of main engine,a control box,a power cord,a set of jig(M12 M14 M16 M18(20 ... of Electric Servo Tapping Machines:a) The researched suspended Feilong Series automatic tapping machines adopt the high-tech CNC touch mode ... features of easy operation, light weight, high effciency, low work power, time and effort reduction, not easy to break screw which ...