Integrated supply chain here includes both forwards logistics and backwards logistics, both original manufacture and remanufacture. A well designed integrated supply chain model could close the material cycles and make full use of the materials. In this paper, we propose a new style that the used goods can be collected by the retailers. A multi level mathematical programming model is presented to research the collection policy of integrated supply chain. In the multi level programming model, we taking into account not only total profits of the whole supply chain, but also profits of every participant, such as profits of manufacture, retailer and so on. After being solved mathematically, the behavior of the model is simulated and analyzed. As a result, some useful characters of the integrated supply chain are given.
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