Corrugated Cardboard Carton Production Line 3/5/7 layers Speed: 60~200m/min; Width: ... ,C,E,F,G, etc. Corrugated Cardboard Production Line is the professional equipment for producing corrugated cardboard.Single Faced, 3-layer, 5 ... type flute: A, B, C, E, F, G, etc. for customers to choose from. 3/5/7-layer Corrugated Cardboard Carton Production Line