... on, FH-120 Semi-automatic hot melt Glue sealing machine (Spraying Glue)Feature:1. PLC automatically controller,frequency control ... when there is no box, the machine don’t spray the glue.3. Automatically display the working ... the box,mechanization producting, the working of the machine is stable.Main function:People put box in ... 1500kg Semi-automatic Hot Melt Glue Sealing Machine (Spraying Glue)