... the specifications!Qingzhou Hengchuan Ore Machinery Co.,Ltd. ,founded in 1992,is a large-scale Ore Machinery Manufacturer. Since the foundation, ... equipments,like Magnetic separator series,Land gold recovery machinery,Gold dredgers,sand dredgers,Washing machine,all kind ... Group,China traffic and construction Grop,China Railway Departments,Yantai Haishan Construction Group,etc. Our products are widely ...