Sand Dredging Machinery, Gold Mining Machinery, Diamond Mining Machinery manufacturer / supplier in China, offering Small Dredge Sand Dradger Machine for Digging The Hole to Extract Sand, China-Designed High-Performance 3000m3/Hr Dredger for River and Canal Maintenance, High-Capacity 1200 M3/Hr Cutter Dredger with Advanced Gear System for Rapid Sand Extraction and so on.