Usage the machine is suitable for making high and low pressure vest bags, arc bags, roast duck bags, food bags, flat bags, medical disposable packaging bags (clothing bags, shoe bags), sanitary napkin bags, etc. (for the production of arc bags, just add the front bag). Performance and features 1. The whole machine is controlled by microcomputer and dragged by stepper motor (optional servo motor control system). 2. Any fixed length, step photoelectric tracking, accurate, stable, automatic shutdown in case of standard loss. 3. Automatic counting and settable technical alarm. 4. Automatic constant temperature makes the bag mouth sealed firmly and smoothly.