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50-160mm High Quality Conical Twin Screw UPVC CPVC PVC Electrical Conduit Water Drainage Pipe Tube Extruder Machine Production Extrusion Manufacturing Machine, Find Details and Price about PVC Pipe Extrusion Machine PVC Pipe Manufacturing Machine from 50-160mm High Quality Conical Twin Screw UPVC CPVC PVC Electrical Conduit Water Drainage Pipe Tube Extruder Machine Production Extrusion Manufacturing Machine - Qingdao Kruto Machinery Co.,Ltd.