... & high precision,Working without computer,standard configuration of 32M storage capacity ,save nine files simultaneously, power off restoring, ... images engraving on copper, aluminum products, any copper molds, mini die molds, stainless steel chest-brand, copper seals, making ... )7.Vacuum System(optional) 1500W 300x250x40mm SD3025MV Mini CNC Router CNC Engraver processing small precision instruments