Deao Machinery specializes in manufacturing screen changers on extruders. Also we produce some other machines such as melt pump, and hydraulic power station which are usually collocated with screen changer. Our products of screen changer can change the meshes without stopping the machine, leak no materials, and is automatical. Thus they can enhance the production and meanwhile save energy. Our screen changer is suitable for manufacturing various products and has been collocated with other equipments in many countries such as the U.S, U.K., France, Germany, Japan and South Korea. The quality is reliable and the capability is steady.