1. thick cast iron structure 2.Changsheng water cooling spindle 3.DSP control system 4.square orbit for three axis Heavy Stone Engraving Machine GX-12181.Photos:This series of models mainly used for heavy weight of the tile, bluestone,marble, granite, white marble, sandstone, glass engraving, metals engraving and so on. Features:1. X,Y, Z three-axises all use imported square square orbits .2. It ...