The top and bottom belts carton sealer series work independently or as a part of production line; Side belts driven, top and bottom sealing, economy and fast; Belts carton sealing series manually adjust the high and the width for different size of carton. The belts automatic carton sealing machine operated easily and safely with low failure rate. The width and height are adjusted automatically control by the photoelectric automatic detection system for packing different sizes of cartons at one time. After the top and bottom are sealed, the carton sealer is turned 90°and pushed into the corner and side sealing systems. The four sides and corners are sealed at the same time quickly and smoothly with the advantages of beautiful and high efficiency, safe manpower.