... extruder 3.Automatic feeding and loading system Automatic XPS Extrusion Line Basic Configuration1. Mixing and Feeding System2. Primary Extruder ... it has been used in the steel construction workshop, iron sheet house ,colored ripple tile, refrigeration storehouse, highway, airport, ... screw? Perfect Twin Screw design special for the XPS Extrusion Line, not only enhance the excellent mixing, but also ...