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When imperfect quality products are produced in a production process, reworkmay be performed to make them become serviceable. In an inventory system, itemsmay deteriorate. Selling deteriorated items to customers will create negativeimpact on corporate image. In this paper, two economic production quantity(EPQ) models are proposed for deteriorating items with rework process. A singleproduction-rework plant system and a system consists of $n$ production plantsand one rework plant are considered. Approximated analytic results are obtainedand numerical examples are provided to illustrate the solution procedure.

Economic production quantity models for imperfect product and service with rework