Evolution of supply chain management (SCM) in recent years has transformed it beyond the simple logic of benefit and economic point of views. One of such key strategic elements in establishing a sustainable and socially responsive SCM is supplier selection and performance assessment. This study brings forward a sustainable supplier evaluation structure under multiple criteria and interval valued fuzzy neutrosophic (IVFN) model. The proposed structure uses CRiteria Importance Through Inter -criteria Correlation (CRITIC) and combined compromised solution (CoCoSo) under IVFN environment for evaluation and selection of suppliers for a dairy company in Iran. Alternative supplier 5 (S₅) emerges as the best supplier with the highest overall score (1.168). Average Spearman rank correlation coefficient between the proposed model and other well established decision-making models methods is found as 0.9651 which establishes reliability of model outcomes. The estimated zero value of Gini Index indicates that supplier 5 has a constant ranking in all considered methods. This is a practical sustainable supplier selection platform which allows decision makers in procurement and SC industries to select the most suitable supplier in any pre-determined period.

近年来供应链管理 (SCM) 的演变已经将其转变为超越利益和经济观点的简单逻辑。建立可持续和社会响应 SCM 的关键战略要素之一是供应商选择和绩效评估。本研究提出了在多标准和区间值模糊中智（IVFN）模型下的可持续供应商评估结构。提议的结构 在 IVFN 环境下使用通过标准间相关性的标准重要性(CRITIC) 和组合折衷解决方案 (CoCoSo) 来评估和选择伊朗一家乳制品公司的供应商。替代供应商 5 (S ₅) 成为总分最高 (1.168) 的最佳供应商。发现所提出的模型与其他完善的决策模型方法之间的平均 Spearman 等级相关系数为 0.9651，这建立了模型结果的可靠性。基尼指数的估计零值表明供应商 5 在所有考虑的方法中都有一个恒定的排名。这是一个实用的可持续供应商选择平台，允许采购和供应链行业的决策者在任何预定时期选择最合适的供应商。