This series of crusher is promoted on the basis of the same kind of crusher. It adopts the most advanced technology at home and aboard, and optimizes the main technical data. As a new type crusher for 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, gypsum, 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.