... of advanced, medium and economical level types, for Single wall,Double wall and triple wall cor.... Characteristics:1.Applied to mid ... and high speed production line.2.Outer Vacuum Structure.3.Adjust glue thickness by electromotion and display digitally ... .4.Flute Type: A, B,C,BC, E, F. Carton packing machine Energy-saving type 1200 Corrugated Cardboard Production Line