1.china cutter suction dredger 2.SGS testing factory 3.china sea sand dredger,sea dredge, sand dredge, cutter suction dredge 1. Description china cutter suction dredgerQingzhou Haiyang Ore Machinery ... hydraulic cutter suction type, hydraulic bucket wheel type, mechanical cutter suction type and suction type),gold panning dredger, iron extracting dredger, iron extracting equipments, sand sieving ...