Adopt stepper motor,matched with the simple operation of micro-computer and the number controller with the num erical key,able to chang various length of transformation,economical manpower material resources.The hair side waste can be sliced antomatically.The finished product completes only in once,nsuring the stable quality,bossting the competitiveness.The white bag can be worked in double line.It is equipeed with the device which can collect and send the final products in piles line.The signed photoelectric eye can track bag printing quality.