在洲际贸易和经济中,商品是从全球供应商那里购买的.有时,预期批次可能包括一小部分残次品.这些残次品可以在修理后出售给顾客,因而仍具有价值.在附近的维修车间对此类产品进行返工而不是退货,既经济划算又可持续.当缺货数量与残次品数量一致时,返工产品可以从车间返回给买方.同时,供应商也会相应地与采购商采取多期延迟付款的策略.整体利润通过中期融资的回报得到最大限度的提高.本研究的目的是建立一个协同库存模型,通过考虑返工、多期延迟付款政策及库存短缺等因素,以获得最大的利润.该模型的研究结果表明,在库存乐观的情况下,通过监控周期时间和阶段比例,可以提高供应链的库存管理绩效.结果证明,当供应商给予买方的许可期限等于或大于生产周期时,利润较小;反之,则利润较大.本文采用代数方法求解封闭系统的最优解.本研究的数学实验旨在提供管理见解与切实可行的实践.“,”In intercontinental trade and economics goods are bought from a global supplier. On occasion, the expected lot may include a fraction of defective items. These imperfect items still have worth and can be sold to customers after repair. It is cost-effective and sustainable to rework such items in nearby repair workshops rather than return them. The reworked items can be returned from the workshop to the buyer when shortages are equal to the quantity of imperfect items. In the meantime, the supplier correspond-ingly deals a multi-period delay-in-payments strategy with purchaser. The entire profit has been maxi-mized with paybacks for interim financing. This study aims to develop a synergic inventory model to get the most profit by making an allowance for reworking, multi-period delay-in-payments policy, and short-ages. The findings of the proposed model augment inventory management performance by monitoring cycle time as well as fraction of phase with optimistic inventory for a supply chain. The results demon-strate that profit is smaller if the permitted period given by supplier to buyer is equal to or greater than the cycle time, and profit is greater if the permitted period is smaller than the cycle time. The algebraic method is engaged to make a closed system optimum solution. The mathematical experiment of this study is constructed to provide management insights and tangible practices.