The corner-edge tape tape tapeCarton Sealer GPB-56 + GPG-755E is applicable to various carton specifications. It only requires manual adjustment of width and height, which is convenient and fast. Equipped with a 90° corner transfer machine and an air cylinder for automatic carton pushing, it can automatically seal, flatten, and process the four upper and lower corners of cartons simultaneously in a fast and stable manner. It can also be combined with GPA/GPB/GPC models to form a complete H-shaped carton sealing system.