1. Adopt packing ways of wrapping, hamming and sealing with compact structure suitable for packing regularly square objects such as paper towel and paper box with relatively low tightless. 2. Adopt frequency conversion infinite variable speed control system, touch panel and PLC and clearer human-machine interface with easier maintenance. 3. Adopt automatic ordering and conveying tail stork easy to be connected with automatic production line and significantly labor cost effective. 4. Minimize the waste of packing materials by automatic detecting and servo tracking of electric sye and stop feeding in case of empty envelope. 5. High automation, high professional, high efficiency and low troubles. 6. Broad packing scope and rapid change among different sizes. Optional Device: Code printer; Code jet printer; Special conveying belt; Sync tear puncher