DSMC and 704 Research Institute jointly developed the marine passenger elevator without a machine room won the national invention patent, swing - 15 degrees in the ship, the normal operation of swing - 5 degree case. At the same time, it has the advanced functions of moisture resistance, corrosion resistance, electromagnetic interference prevention and so on. It has been awarded as "Shanghai independent innovation product"". At present, many ships in our country are using the high requirement, high technology and high quality marine elevator.