Under the strategic planning ASML is trying to reconfigurethe warehouse network in order to increase service level towards its customers.Reconfiguring the warehouse network, ASML is Presently considering to optimizeits warehouse network. With a view to look into the benefits of using Llamasoft, ASML has considered to optimize regionalwarehouse network in China. The objective behind usingdiscrete event simulation is to determine an optimal warehouse networkconfiguration that minimizes ASML’s total transportation and warehousing cost. Thescope covers the footprint and flows for distribution of spare parts fromcentral distribution center to regional distribution center and then tocustomers.