We give full play to the location advantages of Qinhuangdao port, Tianjin port, Jingtang Port, Caofeidian port and Huanghua port, and rely on the broad coal and iron ore bulk material conveying market to continuously develop, improve and improve the conveying equipment with belt conveyor pulley and idler as the core. Now in terms of the overall performance of belt conveyor operation base, It has created a number of domestic leading indicators: the bandwidth reaches 2400mm and the transmission capacity reaches 8700T / h; The length of single machine is 7000m, soft start (braking) is adopted, the start (braking) time is 250s, the belt strength is 4500n / M and the belt speed is 6.1m/s; Large inclination angle up to 75 °. The power of the whole machine is up to 3 × 1650kw, pulley resultant force 5000kN. In recent years, our products are widely equipped in the bulk material transportation port along Bohai and Shendong coal mine of Shenhua Group, and also undertake export projects in Germany, France, Australia, South Asia, the Middle East and so on.