feature 1.adopt standard usb connection, ensure data-transmit at a high speed. 2. a bulit-in lighting for effective observation 3 intelligentized module design for easy to use and repair. 4. flexible design support additional perpherals(ex,rotary attachment,vacuum tabel,honeycomb table,etc.) 5.traversing door easily suppors extra working peces 6.with cambered surface engraving mode. 7. integrated controls, easy-to-use,like a laser printer