Chanpuypetch, W., Niemsakul, J., Puataweepong, P., & Supeekit, T. (2022). Application of Lean Manufacturing System to Improve Production Process: A Case Study of a Steel Pipe Manufacturing Company. Science and Engineering Connect, 45(4), 435–454. retrieved from https://ph04.tci-thaijo.org/index.php/SEC/article/view/10317