Nukpook , Kiangsak, Satitpong Rattanakam, Apiwat Panyawong, Sompol Nillavesana, and Anun Punyaperm. “Research and Development of Tea Leaves Crushing Machine for Black Tea Production”. Thai Agricultural Research Journal 39, no. 2 (June 14, 2021). Accessed April 20, 2024. https://li01.tci-thaijo.org/index.php/thaiagriculturalresearch/article/view/244106.