Heavy Duty Paper Machine Packing Box Use:for packing machine Size:accept clients' requirement Enviroment-friendly The Paper Packing Boxes are made of corrugated paper,the corrugated paper can reinforce the rigidity of the packing boxes!There has A,B,C,E,AC,BC,CBC,CBE ...corrugatedThe packing boxes can be made to any styles, sizes, printing according to thecustomers' requests