... .GPPS raw material 2.PLC controller 3.Gentian type high foam technology High Foaming PS Sheet Extruder(HY-75/90) First Screw:General ... polystyrene granule3.In the extruding process,vesicant is injected at high pressure.After extruding, foaming, cooling, shaping and hauling off, ... variety of packaging vessals such as fast food box, aquatic plate,super market tray, cake tray, KT board, instant noodle ...