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 extraction boats, gold panning equipment, large-scale dredging cutterhead sand (mud) extraction boats, dump trucks for sand transportation, large, medium, and small iron sand extraction boats, dual-purpose land and water automatic excavation boats, water and dry sand extraction, screening machines, auger sand washing machines, stone washing machines, and sand mountain crushing and cleaning machines, among others. We offer over 80 models for customers to choose from, and we also design and manufacture customized products based on the geographical environment of the user. Our sand mining machinery simultaneously completes a series of processes including screening, extraction, separation, cleaning, and classification, producing qualified products in one go.