... Long working life Advanced CNC control Jade CNC Router JD4040 is for engraving jewelry decoration, seal, jade bracelet, ... jade pendant and so on. Jade Router JD4040 series1.This series adopts advanced digital control system, operate ... optional which is for engraving cylinder material.Technical ParameterModel JD4040 X-Y-Z Working Area400x400x100mmSpindle Motor800w inverter driver water ...