Chongqing Rongjiao Machinery Manufacturing Co., Ltd.(RJ) was established in 2008,located in Banqiao Industrial Zone, Chongqing City, China. We have attained ISO9001 International Quality System Certificate. We are professional manufacturer and trading enterprise combining together with design, development and production of RJ series concrete mixer reducers, hydraulic pumps and motors which are widely used in 3~16M2 concrete mixer truck, pump truck, crane, excavator, road roller, coal mine driving machine etc. Our specialized manufacturing and sales team provide our customers high quality products and excellent service. If you are interested in our products just freely contact with us at any time. We are sincerely looking forward for your visiting our company on site.