The Three-stage Supply Chain Model with the Integrated Planning of Supplier Selection

This paper considers the supplier selection problem of the limited capacity with multi-product, multi-supplier, multi-vendor and multi-period. And it has established a three-stage supply chain model. It assume that the materials from suppliers which may be differences in quality. Different qualities of finished products are manufactured by different qualities of materials. The rates of transportation to different vendors are not the same. The decision maker needs to decide which products to order, in what quantities, with which suppliers, and in which periods. And the buyer needs to decide which finished products to buy, in what quantities, and in which periods. Finally, this model has been solved by genetic algorithms.