Green Supplier Evaluation by Using the Integrated Fuzzy AHP Model and Fuzzy Copras

Since being environment-friendly has become more important for manufacturers, green supplier evaluation is one of the most crucial challenges for supply chain in the industry. This study aims to evaluate and choose the best green suppliers by integrating fuzzy AHP and fuzzy Copras for seven green suppliers. Fuzzy AHP is used to determine the importance of green supplier performance criteria. Because the criteria and options that are considered in this study are associated with uncertainty, the fuzzy theory is applied as one of the key tools for modeling uncertainties. In this study, a set of criteria for evaluating the green suppliers is identified. Afterwards, fuzzy Copras is employed to evaluate and choose the best green supplier. The contribution of this study lies in the integration of Copras and analytic hierarchy process techniques for green supplier evaluation. That is fuzzy Copras reveals a solution as an optimized respond when the uncertainty is a significant factor in decision-making process, this enhances the accuracy of AHP pairwise comparison. The findings of this study are beneficial for manufacturers, suppliers, and organizations which attempt to improve the supply chain network by eliminating waste.