Secondary trading of campus network
4.0
&Nbsp; such a system fundamentally solve the drawbacks of traditional second-hand information communication on campus, campus chatter has all sorts of second-hand merchandise information has been effectively integrated, convenient to the majority of users. And having customers often just University campus network users, not much for all systems on the scale, from an economic point of view, almost entirely due to the choice of development tools and server as free and open source software, and is due to develop lower-cost based on Web b/s mode, instead of the relatively high cost of c/s mode, and so was economically feasible.