Two-phase deteriorated supply chain model with variable demand and imperfect production process under two-stage credit financing

In this article, an imperfect production inventory model consisting of a manufacturer and retailer with quality improvement effort the promotional sensitive demand pattern is investigated under two-tier credit policy. We study for deteriorating items where deterioration occurs at different rates in manufacturer’s retailer’s level considering fixed lifetime product. Discussing six possible cases policy analytically, we analyze behavior integrated system concerning lot-size, such that average profit maximum. To obtain optimal solutions model, design operative solution algorithm. A numerical example provided to test feasibility effect variation key parameters also studied. The outcomes proposed show have be more careful about their offered periods aspect profit. It observed maximum when both by belong cycle. Moreover, identify extended product does not meet higher all times. This directs stimulate market while it always economically profitable supply chain.