Rerkkumsup, Pongpun, Veerawit Kammag, Jaratsri Soeatuptim, and Pramot Srinoi. 2023. “The Improvement of Production System using Virtual Simulation”. Journal of Advanced Development in Engineering and Science 7 (19). Babgkok, Thailand:47-58. https://ph03.tci-thaijo.org/index.php/pitjournal/article/view/875.