With the end of 2021, a high-efficiency sand dredging pump CSD550 （ replace the GrT 7500/23 dredge pump on the Bulgar dredger of Russian production with a Dutch-made IHC 5-40-70 dredge pump）specially designed by Zidong is approaching production from design communication, modification and performance optimization. It is the best gift for users and Zidong pump in 2022 new year. Look forward to the completion of production of this new pump!