The products that lose their initial value after a time period are known as deteriorating products and need more appropriate decisions for optimization in a closed-loop supply chain. The studied closed-loop supply chain consists of a manufacturer and a distributing center that are producing and distributing a deteriorating product to customers. The deteriorating products are collected from distribution center and made available by the producer. This closed-loop supply chain, which consists of four main sub-systems, is simulated using the system dynamic. The effects of three strategy groups on the main performance indicators of the model have been simulated: bargaining, better warehousing and change collection rules. Some scenarios are designed in each group and the model is simulated based on them. Total cost, total sale and total disposal are considered as the main performance indicators of the closed-loop supply chain. The results show that the best performance of these indicators is in better combining warehousing conditions and more frequent collections. In the bargaining strategy, constant rates and supply shortages also performed better.

在一段时间后失去其初始价值的产品称为变质产品，需要更适当的决策才能在闭环供应链中进行优化。所研究的闭环供应链由制造商和分销中心组成，这些生产商和分销中心正在向客户生产和分销质量下降的产品。恶化的产品从配送中心收集并由生产者提供。使用系统动态模拟了由四个主要子系统组成的闭环供应链。模拟了三个策略组对模型主要绩效指标的影响：讨价还价，更好的仓储和变更收集规则。在每个组中设计一些方案，并基于这些方案模拟模型。总计花费，总销售量和总处置量被视为闭环供应链的主要绩效指标。结果表明，这些指标的最佳性能是更好地结合了仓储条件和更频繁的收集。在讨价还价策略中，恒定汇率和供应短缺也表现得更好。