... CORRUGATED BOARD PRODUCTION LINE 2.mill roll stand,preheater,single facer ,transport conveyer, gluing machine ,double facer ... making corrugated cardboard. Including mill roll stand,preheater,single facer ,transport conveyer, gluing machine ,double facer ... is UV type, which is widely used in the world. It is well-designed. The ... with long service. automatic 5 layers corrugated paperboard product line