This project is a new stone crushing line putting into operation in December, 2017, and it processes granite mainly. Because the finished products are used in expressway, there is a strict requirement about grain shape. According to customers’ demand, expert from Liming Heavy Industry adopts PF1214 impact crusher meeting the demand about shape and capacity. This product takes advantages of low investment costs and cost-effective. In addition, the capacity can reach 120t/h which has surpassed the original plan. Finally customer is very satisfied.