中文摘要：

供应链契约是实现供应链协调的重要手段，本文以回购契约为研究对象，应用积分理论，在经典回购契约模型的基础上，引入销售成本、缺货损失成本、残值3个新的参数变量，重新构建经典回购契约模型和降价回购契约模型，采用递进式的方法，研究电子产品二级供应链的协调情况。研究表明，在本文的假设条件下，通过回购契约模型模拟计算，能够实现供应链的协调，并且在降价回购契约模型模拟中，供应链的效益实现了明显增长。

英文摘要：

Under the situation of economic globalization, supply chain coordination becomes more and more important in realizing supply chain coordination. The authors rebuild the classical repurchase model and the discount repurchase contract model with the use of integration theory under such influence factors as the cost of sales, the shortage cost, the scrap value, etc. And then, the authors analyze the condition of the secondary electronics supply chain coordination by progressive approach. The results show that, under the assumption of this paper, supply chain coordination can be achieved through the computing of this repurchase contract model. And in the repurchase price contract model, the profit growth of the supply chain can also be achieved.