Adopt MCU for master control circuit, display on LCD screen, control by the inverter, excellent person-computer interface, easy to pack. And the length of product adopt double frequency converter, stepless speed change, various range adjustment,, automatic clear up the packing product, and make it enter packaging machine. This machine can match with front-end production very well. The length of finished bag will be accurate tracked by high sensitivity sensor. It will not need to adjust by manual as soon as set. Individual control temperature for each sealing. It suitable for many kind of wrapping material.