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sand cutter suction dredgerdetailed description: 1.The dredger dig sand from underwater by buckets on the chain 2.It only mines sand and stone from water, and can save much energy Our main products:Sand/Mud dredgercutter suction dredgerbucket chaindredgersmall andmiddle-sized transport shipmineral processing dredgergold mining dredgersand washing machinesstone crushing machineryIf you are inquiring about our products, could you please give us the information like:1. What is the output per hour2.what is the dredging depth3. Are the dredgers working in salt or fresh water4. is the dredger hydraulic or mechanical5. What is the ratio of the sand and stone in the working site6. The other data of the working place of the dredger