Polymer blend compositions of a first polymer component comprising an ethylene propylene copolymer and a second polymer component comprising an isotactic polypropylene copolymer. The present compounds may be employed to inhibit biofilm formation and thereby inhibit adherence of bacteria to a host cell. Upon receiving the AR information request signal, the server determines AR information including at least one tag pattern provided in the service cell and information associated with the tag pattern and transmits the AR information to the mobile communication terminal. The locking pin slidably engages the reinforcing plates and associated wear bars.