The Research Of Optimizaiton Of Inventory Control In F Company

F company is a tie1 supplier of DFL. As DFL's request, F company implement synchronized supply system to provide components to assembly line of DFL JUST-IN-TIME. In order to achieve this kind of supply method of small lots and high frequency, F company setups a JIT pull production system based on KANBAN. Component production KANBAN of finished goods supermarket is used to start production. And material withdraw KANBAN is used to trigger replenishment of raw material. And MRP also is used for master production plan and raw material purchase. But this kind of inventory control policy only focuses on no shortage; never consider the cost and efficiency of inventory system. So, it causes high inventory level and hold lots of money in store. Optimal on inventory level and cost, will be helpful to reduce the operation cost, increase cash flow, and positive to economic crisis.This paper uses the value stream analysis tool of lean manufacturing, to analysis the synchronized supply system between F Company and DFL, to analysis the process of material flow. And focus on optimal of integrated inventory, make a model for integrated inventory, and raise some ideas for this JIT system.