Optimising inventory management: addressing constant deterioration and imperfect items with screening, time-dependent demand and two-layer trade credit

Inventory models are frequently developed in which products of perfect quality are produced. The purpose of this study is to create a model with uncertain supply may have a random proportion of defective items. As a result, item inspection becomes critical in all situations, when products are vanishing current companies may use promotional tools to boost sales trade credit is a strategy that benefits both suppliers and retailers. Hence, a two-level trade credit scheme in which the supplier offers a credit period to retailer and retailer provides to customers. Inflation is the rate at which the prices for goods often affects the buying capacity of consumers and recent time value of money is calculated. The primary purpose is to enhance the retailer's overall profit with respect to cycle time and is numerically solved using a devised algorithm. Finally, sensitivity analysis is done on key parameters, and some managerial implications for the retailer are emphasised.