Qingdao Yifeng Plastic Machinery Co., Ltd is high-tech enterprise specializing in producing integrated plastic equipment and different plastic pipelines and matrix with combination of scientific research, development, manufacture and service. plastic profile extrusion line: This line is the manufacture facilities of PVC plastic profile materials, including window and door series profile, plate, sheet, tiny bubble profile and tiny bubble ornament plate. The big shape plastic door and window profile production line is developed by Our corporation introduces the advanced technology from abroad, forming a complete system with twin conical screw extruder, it feature high automation degree, smooth work performance, big yield and high efficiency.