The channel quantity of customs checkposts on the free trade port area(FTPA)has important impact on logistics operation in FTPA.Firstly,based on the simulation model of logistics operation in FTPA with queuing network theory,the mathematical programming model was established for optimal channel quantity as a multi-objective integer optimization problem with nonlinear constraints.With the fuzzy decision theory,this problem was transferred into the problem searching a Bellman-Zadeh optimal solution.Then,the f...