... iron frame ,square linear guide way ,and ball-screw transmission for x,y, z axis , more scientific to ensure ensure ... device ,servo system system are optionalApplication field:special for jade plaques engraving,also for Sign board process, mould, bronzing ,badge, pattern ... dictates G-codetransmission Two-nut rolling ball screws from Germany for x,y,z axis square linear guide wayResolution 0. 01mmHigh ...