Madthaarak, Weerachai, Sriwan Khamtree, and Jantarotai Promjan. 2026. “Comparison of Ergonomic Risks and Fatigue in Improving the Performance of Smoked Rubber Sheet Factory Employees”. Journal of Engineering and Industrial Technology, Kalasin University 4 (1):45-61. https://doi.org/10.14456/jeit.2026.4.