Qingzhou Guanshan Machinery Co., Ltd. is a manufacturer of stone washing machines, stone washing equipment, and other stone washing machinery, including vibration stone washers and drum stone washers. Since its establishment, the company has evolved into an integrated manufacturer encompassing research and development, mechanical design, production, installation, and after-sales service. Our main products include sand mining boats, sand pumping boats, gold panning equipment, large-scale dredging and pumping boats with绞刀, dump trucks for sand transportation, large, medium, and small iron sand extraction boats, dual-purpose automatic excavation boats for both dry and water land, water and dry iron sand extraction systems, sand screening machines, auger sand washing machines, stone washers, and sand mountain crushing and cleaning machines, among others, offering over 80 specifications for customer selection. We also design and manufacture customized products based on the geographical environment of the customers. Our sand mining machinery simultaneously completes a series of processes including screening, extraction, separation, cleaning, and classification, producing qualified products in one go.