A New Integrated Multi-Criteria Decision-Making Model for Sustainable Supplier Selection Based on a Novel Grey WISP and Grey BWM Methods

Supplier selection is an important task in supply chain management, as suppliers have a vital role the success of organisations chain. Sustainability has emerged solution to decreasing resources and increasing environmental social problems past few decades. It been applied various industrial operations, one them supplier selection, mitigate unwanted effects future. Sustainable complicated multi-criteria decision making problem, including several criteria from economic, environmental, perspectives. To deal with subjective judgements makers, fuzzy grey methods are widely used making, In case small, limited, incomplete data, theory provides satisfactory results, compared methods. Therefore, this study integrated method Best-Worst Method (BWM) Weighted Sum-Product (WISP) for choosing most sustainable textile manufacturer, which includes three main twelve sub-criteria. According result proposed model, best performance was determined be SP2 coded. The results developed model were shown experts, accuracy confirmed. higher amount product can purchased code, tighter relationship worked supplier. contributions are: (1) Develop new MCDM called Grey WISP. (2) Create theory, BWM, WISP that assess sustainability using hybrid model. not just selecting suppliers, but also any other multiple alternatives. findings suggest achieved accurate results.