A.Feeding part  Vacuum adsorption lead - edge paper feeding, with frequency conversion control of air volume, ensuring stable and accurate paperfeeding.  Automatic zero - return system for the entire machine, storing common orders, enabling quick order change and easy operation.Dust removal device and electrostatic brush can remove paper dust on the surface of the cardboard, improving print quality.Left and right baffles and the rear bafle are computer -controlled, with a precise guiding mechanism for smooth displacement, and a side shooting function.Optional: Servo lead edge, pressure - free lead edge system. B.Printing partFull - process vacuum adsorption, combined with a ceramic paper - feeding wheel transfer system.the damper switch according to the length of the cardboard.Variable frequency adjustment of adsorption wind force; can also automatically adjust...