This series of crusher is promoted on the basis of the same kind of crusher. It adopts technology oh home and aboard, optimizes the main technical date. As a new type of fine crushing and coarse milling, it is suitable for medium cement industry. It is widely used to improve old cement factory and establish new cement factory, also can be used to crush iron ore, sand, rock, clinker, block coal and other medium—hard material. It has features like: simple structure, large crushing ratio, high capacity, even particles, convenient maintenance, low production cost and so on.