vertical packing machine Shanghai Machine is designed and manufactured by advanced science and technology in the world. It has reliable quality, high efficiency and beautiful shape . It is controled by PLC, using encoding to control the length of bag.we have adopted advanced photo electricity track planet differential compensating mode and automatic constant-temperature control mechanism, which makes our machine has very fast packaging speed. Moreover, our machine can carry out step less speed adjustment, and automatically finish the processes of bag making , computation, filling, sealing, cutting, counting and printing number on the bag. It can be used for various compound packaging materials.