THE IMPACT OF QUALITY MANAGEMENT SYSTEM ON OPERATIONAL PERFORMANCE OF AN AUTOMOTIVE FACTORY IN SAMUT PRAKARN PROVINCE

Abstract

            This research aimed 1) to examine the level of quality management system implementation in automotive parts manufacturing factories in Samut Prakan Province, and 2) to analyze the impact of each dimension of the quality management system on the operational performance of these factories. The sample consisted of 347 employees, and data were collected using a questionnaire. The data were analyzed using descriptive statistics such as frequency and mean and inferential statistics, specifically multiple regression analysis. The findings revealed that 1) Automotive parts manufacturing factories in Samut Prakan Province implement quality management systems at a high overall level (  = 3.78). When considering each aspect in descending order of mean scores, the highest was Operational Strategy (  = 3.88), followed by Production Management (  = 3.83), Ethical Management (  = 3.76), Quality Management (  = 3.74), and ERP Systems ( = 3.68), respectively, and 2) The quality management system including quality management, operational strategy, ERP systems, ethical management, and production management was found to have a positive influence on various dimensions of operational performance, with production management and ethical management showing the most statistically significant effects. These findings indicate that organizations that prioritize process control and operate under a clear ethical framework are more likely to achieve tangible improvements in operational efficiency. Therefore, the study's results can be applied as a guideline for formulating quality policies and developing strategic management approaches suitable to the context of industrial organizations.