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Designing deadlock prevention controllers for flexible manufacturing systems (FMS) is of theoretical and practical importance. This paper extends the basic idea of our recently proposed deadlock prevention method to a real spectacle production system, a typical FMS. First of all, this real system is modeled and analyzed by Petri net (PN). Then, we apply our recently proposed method to design the deadlock prevention PN-based controller for this real system. The finally obtained controller is deadlock-free and maximally permissive.