摘要：Customer-supplier relationship is extremely important for the success of the company which
implies that it is necessary to maximize trust and cooperation when setting and achieving company
goals. This study represents an analysis of customer –supplier relationship from the aspect of both
“certified” and “non-certified” companies in Serbia. Although the number of non-certified
companies in Serbia is much higher than the number of certified ones, companies that have showed
interest in taking part in this research are those that have certified quality management system, even
though they represent only 2.11% of the total number of companies in Serbia. The data collected in
this study were analyzed in structural equation model (SEM), in which the multi-group confirmatory
factor analysis (MGCFA) was used in order to perform comparative measurements using two
samples from different companies- both “certified” and “non-certified” ones.
关键词：Cooperation; Certification; Effect; Quality Management System
