1,for PP PS sheet only 2,large output 3,double layer 4,38CrMoAIA alloy ... well as the large output.We assure the excellent service including maintenance.AppilicationTF660 PP PS Double Layer Extrusion Line are suitable ... to form the sheet of PP and PS,which are the materials for forming ... of Roller:320mmMotor Power:0.7Mpa TF660 Extrusion Line for PP PS sheet