Zhoushan Shengzhou Screw Manufacture Co.,Ltd.is located in China Screw capital-Zhoushan Jintang,the company is a research and development,design,production,sales,service as one,focusing on manufacturing rubber and plastic barrel,screw and a variety of presses components of the enterprise.Selection of quality steel 38CrMoALA,after quenching and tempering,qualitative,nitrogen and other precision finished products;bimetallic barrels of high quality 40Cr,with a unique f......
