Zhoushan Hengdasheng(HDS) Plastic Machinery Factory is the largest enterprise which specializes in manufacturing extrusion screw and barrel in China. The company has over 10 years&＃039; experience in design and manufacture of high quality Henri series extrusion screw and barrel. Our products have been sold through out the country and exported to over 20 countries such as U.S.A., Europe, Russia, East and South Asia which are developed areas and countries of plastics industry in the world, also we are the largest supplier of extrusion screw and barrel in China. We have equipped advanced technology and equipment for processing, test, as well as extended experience for design and high-level management, passed ISO9001 and 2000 certified by the quality management system in 2004. We can supply first-class nitrided, chrome-plating, bimetallic and surface spraying hard metal treatment twin screws and barrels. At the same time, our company is able to take mapping, design for clients and make products as per customer&＃039;s drawing excellently and so on.