99精品欧美一区二区三区黑人,国产精品久久久久久久免费A片,成人免费A片毛片无码视频,18无码粉嫩小泬无套在线观看

The machine is mainly applied to the packaging of liquid material. The shape of packaging bag refers to four sides sealing or three sides sealing bag. The machine can finish the functions such as unwinding, tension control forming, vertical heat sealing, bag pulling, horizontal heat sealing, cutting off, date printing and photoelectric benchmarking of the plastic film automatically.