Nampan P, Theerathammakorn S, Teekasap S. Efficiency Improvement of Cosmetic Tube Filling Machine by Applying QC Tools. IENJ [internet]. 2021 Jun. 29 [cited 2025 Apr. 29];7(1):32-41. available from: https://ph02.tci-thaijo.org/index.php/ienj/article/view/242056