Zhejiang Zhongsu Screw Co.,Ltd is a professional manufacturer of extruder screw barrel，injection screw barrel，parallel screw barrel，conical twin screw barrel，rubber screw barrel，double metal screw barrel and other various types of screw barrel.At present，Zhongsu screw have a professional design experienced production team.Zhongsu screw Co.ltd.located in east of zhoushan islands of the Hangzhou bay rim which is the screw town---Jintang island，close to Shanghai，Hangzhou，Ningbo and other big city，transportation convenient.