conical twin screw extruder 1. ISO 9001 certification, CE certification; 2. Good mixing, large output, working steady , etc SJZ series conical twin screw extruderSJZ series conical double screw extruder especially used for extrusion PVC powder, it has advantages as good mixing, large output, working steady , long service life time etc. equipped with series mold and auxiliary machine, it can ...