Supplier selection for steelmaking company by using combined grey-marcos methods

Selecting the right suppliers should saw as more than simply scanning a set of available price lists and comparing them, but rather as including a wide range of different criteria, whether qualitative or quantitative. In contemporary supply chain management, potential supplier performance is based on multiple criteria rather than considering cost as the main criterion in decision-making. This makes the process of selecting the best supplier from a group of suppliers a complex and laborious process, due to the multiplicity of criteria that must be taken into account in the evaluation process. This study aims to implement a hybrid Grey theory-MARCOS method for decision-making regarding the selection of suppliers in the Libyan Iron and Steel Company (LISCO) to help it compete. This hybrid model is divided into two phases: The first consists of determining the weights of the criteria that contribute to decision-making, which has done using the Grey theory, and the second phase consists of selecting the best supplier from among the six suppliers, which has completed using the MARCOS model. The effectiveness of the model has compared to three other methods, CODAS, TOPSIS, and VIKOR. The results showed that the proposed method effectively selected the best supplier among the six alternative suppliers.