Study On Coordinating Contracts Related To Return Policy For Perishable Product's Supply Chain

Under the market environment in which the competition becomes more and more intense and the consumers'demands become more and more personalized and diversified, the enterprises are facing more and more demand-uncertainty risks. For better meeting the customers'needs and seeking a long-term development, all the enterprises belonging to the same supply chain should collaborate and take some strategies to coordinate their actions. These strategies should make each supply chain member take the impact of its own actions to other members into account and make decisions that are optimal for the whole supply chain system. With these strategies, all the supply chain members will share the market risks and achieve the win-win situation, and the supply chain will operate effectively and develop coordinately. When the competitiveness of the supply chain is enhanced, each member's competitiveness will be enhanced. So, study on the supply chain contract as a coordinating strategy is of practical significance.This dissertation mainly aims to design some contracts based on return policy to coordinate the perishable product's supply chain and achieve the win-win situation. Firstly, we establish a two-echelon supply chain model for perishable product, which is composed by one manufacturer and one retailer, and analyze the coordinating effects of return policy on this supply chain. Then, based on these, against the imbalance of the profits improvement between the supply chain members under return policy, we consider the quantity discount contract, establish a return and quantity discount combined contract, study the conditions under it to realize supply chain coordination and win-win, and analyze its effects on the profits improvement. Following this, against the situation that return policy can only provide effective incentive for the retailer to increase order quantity, we consider the sales rebate contract, establish a return and sales rebate combined contract, study the conditions under it to realize supply chain coordination and win-win, and analyze its effects on the profits improvement. At last, we take the costs related to return and the supply chain members'different handling efficiency of the unsalable products into account, study the applicable conditions of return policy, and analyze the coordination effects of markdown money contract when return policy is not applicable.