A principal-agent model on retailer's order contract in perishable product supply chain

In this paper, we set up a principal-agent model of perishable product supply chain under centralized decision making situation and decentralized situation with information symmetric and information asymmetric respectively we find that supplier can coordinate the supply chain through proper strategy. Especially under information asymmetric condition, difference basic order and different kickback coefficient between high quality and low quality distributors can induce a better output, thus the supply chain system's profit can be optimized. Every paper should include an abstract with 100-300 words. At the end of the abstract, skip a line and then type.