High speed Fully automatic PLC system is optional Good after-sale service 5Ply/7Ply ... mainly includes mill roll stand,single facer,conveyor bridge,glue machine,doublefacer,preheaters,preconditions,slitter scorer,cut-off stacker,steam heating ... supplying system.Appliable for 5Ply/7Ply corrugated carton paperboard production: Automatic High-speed 5Ply/7Ply Corrugated Carton Sheet Production Line Machine