Dredger, Cutter Suction Dredger, Sand Dredger manufacturer / supplier in China, offering Watermaster, Small Sand Dredge (YS-CSD 2008), Dismountable Tug Boat and so on.
It is the last photo.
You have seen all photos.
QINGZHOU YONGSHENG DREDGING MACHINERY CO.,LTD is the specialized OEM of dredging machines for 23 years.
This certifications is issued by goverment for jet suction dredger because of good quality.