The project "study on ecological culture model of Penaeus Vannamei in closed recirculating water" , which was completed by Institute of Oceanology, Chinese Academy of Sciences, Dalian Huixin Titanium Equipment Development Co. . The expert group believes that the project has achieved innovative results in the design of recirculating aquaculture processes, water quality treatment, water use efficiency and shrimp production per unit of water body, reaching the leading level in China.