Qingdao Haosaite Plastic Machinery Co.,Ltd specializes in manufacturing Corrugated Optic Duct extrusion line. Conical twiin-screw extruder is an important component in extrusion of PVC production. and WPC extruding. The extruded product with this tooling has the advantages of high voltage resistance, flexible ability, easy application, and long service life. The products have the features of high practicability, good safety, easy installation, and so on. 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 deffernet prescription; With computer control system ensure the machine running stable and good production.