1) dual frequency converter control, the bag length is set and cut immediately, no need to adjust air travel, one step in place, save time and save film. 2) text-based man-machine interface, convenient and quick parameter setting. 3) fault self-diagnosis function, fault display at a glance. 4) high-sensitivity photoelectric eye tracking, so that the sealing and cutting position is more accurate. 5) temperature independent PID control, better suitable for all kinds of material coating. 6) positioning stop function, non-stick knife, no film cost. 7) simple transmission system, more reliable work, more convenient maintenance. 8) all the controls are implemented by software, which is convenient for functional adjustment and technical upgrading and will never lag behind.