Qh Corrugated Cardboard Production Line 3/5/7 Plys Carton Paperboard Box Making Machine. High-Speed Production: Working speed ranges from 80 to 350m/min for efficient output. Multi-Ply Capability: Supports 3, 5, and 7 ply corrugated cardboard production. Customizable Width: Cardboard width adjustable from 1400mm to 2800mm. Steam Heating System: Uses steam heating with a volume of 2000-4000Kg/Hr. Automatic Operation: Fully automatic stacker and operation for minimal labor. Customizable Color: Machine color is customizable to client preferences. Flexible Power Options: Power supply 380V 50Hz can be selected by the customer. Global After-Sales Support: Engineers available to service machinery overseas.