The conical twin-screw extruder is an important component in extrusion of PVC production. High quality conical twin-screw extruder , advance unique screw with effective plasticization and the science design ensure high efficiency extrusion of PVC. The ideal of flexible plasticization ensure the good quality of PVC pipe, profile, sheets, etc; Dependable and the external cycling temperature control system of two stage screw core confirm the production of high quality PVC production in different prescription; With computer control system ensure stable running of the machineand good production.