Rock crusher(http://rock-crusher.org/Products/Rock-Crusher.html) is a high efficient machine Zhengzhou Yifan Machinery Co., Ltd. R & D production, it absorbs the latest technology, is a new generation of rock crushing equipment, ideally suited for a variety of soft medium hard rocks crushing and tertiary crushing operations . Is widely used in highway, railway, water conservancy and municipal construction projects, and has been unanimously praised by users.