Design a closed-loop supply chain in uncertainty conditions taking into account the intermediary warehouses (Case Study: khodrang company)

The management of the supply chain is the process of planning, implementing and controlling the flow of raw material, inventory in the course of construction, final products, as well as the flow of related information from the supply of raw materials up to delivery to the final consumer. The purpose of this study is to design a closed-loop supply chain in uncertainty conditions taking into account the intermediary warehouses in the khodrang company. so that its impact on the process of production and distribution, Berlzom recognizes as much of this concept and position as can be found in Enhance the development of khodrang company. In this research after collecting information and consulting with experts of the company, the model was simplified as much as possible without damaging the data principle. Using the nonlinear programming and neural networks and with the software Metalb and Gram coding. The results of this research in a closed environment without the involvement of external variables in the company itself show that the managers of this company have been able to implement the criteria and indicators related to the ring chain and the Nasal demand and product return levels provide the satisfaction of their major customers and suppliers.