1) Adopting international brand variable speed control motor for the extruder to make the plasticization stable and constant; 2) Using brand melt pressure and temperature sensor to ensure high accurage data 3) Cantilever roll structure making it easy to lead the film and be operated; 4) dopting PLC control system and friendly operation interface to easily operate; 5) On-line testing and displaying melt pressure, temperature and other key data; 6) Emergency stops and devices to protect safety of the operator;