... holding rateSubmersible Pump 7.5 kw ,one setWinch Ladder rising winch 4kw electric winch , one setHand operating ... , Sand Production and Mining Machine. Produce a variety of series products , such as : cutter suction dredger , bucket chain ... dredger , self- propelled dredger , gold panning dredger , iron extracting dredger, iron extracting equipments , sand sieving machines, crusher , weathering sand ...