Most existing deadlock prevention studies on flexible manufacturing systems (FMSs) resort to Petri nets (PNs) by designing controllers for them. PNs are an effective tool for analyzing and modeling the dynamic behavior of FMSs. As an important subclass of PNs. the system of simple sequential processes with resources (S3PR) can be used to model many FMSs. https://www.chiggate.com/aptamil-allerpro-syneo-2-900g-online-now/