Main performance and structural features: 1. Dual frequency converter control, bag length can be set and cut immediately without adjusting the idle run, achieving the desired result in one step, saving time and film. 2. Human-machine interface, convenient and fast parameter setting. 3. Self-diagnosis function for faults, with clear fault display. 4. High-sensitivity photoelectric eye color mark tracking, digital input of sealing and cutting positions, making the sealing and cutting positions more accurate. 5 Temperature-independent PID control, better suitable for various packaging materials. 6: Positioning stop function, no sticking to the knife, no waste of packaging film. 7: Simple transmission system, more reliable operation, and more convenient maintenance. 8: All controls are implemented by software, facilitating function adjustment and technical upgrade, never falling behind