pe extruder double-column hydraulic screen changer is used for chemical fiber, blown film, flat film, cast film production, pipe, sheet, wire, fiber manufacturing, pelletizing line, recycling, etc. It can meet the production of high temperature, high pressure and high extrusion of any polymer material. It can be used in conjunction with extruders of different standards. It does not stop to change the screen, the product is not interrupted, and the material is not leaked. Features of PE double-co