After we identified all input data, we developed a simulation program as shown in figure 3. We then run the simulation for 10 replication and each replication for the high season period (June–December). We get average total lead time equals to 113.37 days with half width equals to 3.80. With the half width of 3.80, it is our acceptable value. Therefore, 10 replication run is enough for our study. Figure 4 shows results from our AS–IS run.