| In today's polyurethanes industry, Yantai Wanhua polyurethane Co., Ltd. (YTPU) compete seriously with world-class enterprise such as BAYER ,BASF, DOW etc. In order to keep competence advantage, taking lean production style has been urgent affaires. So that can reduce the production cost and minimize input and maximize output .This thesis is the research on above questions. Through research on global MDI supply and requirement, developing trend, current competence situation, future MDI Industry trend. opportunity and challenge for YTPU. Reduce operation management cost to support our Low cost expanding Strategy.Throgh research on Rene Descartes's methodology, Lean production theory,Six Sigma tools. bring out the model to reduce cost:decomposing complicated problem to simple. implement LP management to eliminate waste, with the help of Six Sigma tool to optimize the process. The three aspects works together to achieve the goal of reduce production cost. On the base of the model,the paper analyses the ralavent influenced factors of purchase,logistics, manufacture ,storage. research the ways to reduce cost .introduce YTPU's present process situation , issue the strategy to lean and improve the process. The paper is of great realistic guidance to yantai's strategy to reduce cost. |