This investigation integrates manufacturing and transportation systems. In order to control the system under study, the environmental hedging point policy (EHPP) is utilized. Here the manufacturing system consists of unreliable production facilities. This is a single-product manufacturing system considering constant demands for final products. The unreliability of the system is a consequence of the downtimes of the transportation system. So, repairs are required. Failure and maintenance are stochastic processes. The transportation system studied here includes the determination of a selective strategy for transporting a family of products. This flow becomes from one warehouse to a distribution center based on the demand of the customers. As the proposed model suffers from the complexity and difficulty, in this paper, the simulation-optimization method is exploited to tackle the problem. The results of this research determine the economic level of production and optimal transportation strategy. After the implementation of this policy, the manager can minimize the total cost.

该调查整合了制造和运输系统。为了控制研究中的系统，使用了环境对冲点策略（EHPP）。这里的生产系统由不可靠的生产设备组成。这是一个考虑最终产品需求的单产品制造系统。系统的不可靠性是运输系统停机的结果。因此，需要维修。故障和维护是随机过程。这里研究的运输系统包括确定运输一系列产品的选择性策略。根据客户的需求，该流程从一个仓库变为一个配送中心。由于所提出的模型存在复杂性和困难性，因此在本文中，仿真优化方法被用来解决这个问题。这项研究的结果决定了生产的经济水平和最佳的运输策略。实施此政策后，经理可以将总成本降至最低。