... face to face, the long time use precision is high.Hard Materials(stone, marble, granite etc) CNC Engraver Configuration:1. ... made inverters, fully shielded, uneasy distorted cable, 5.U flash disk DSP control system, Wentai software, type3 softwareHard Materials(stone, ... :StepperApplied area: The machine mainly used in the engraving of hard materials such as solid wood, marble, granite, glass, stone ...