Jansri, Ektinai, Jidapa Kromsuriyasak, Jakkphat Preedawat, and Narongchai O-Charoen. “Polypropylene and Linear Low-Density Polyethylene Two-Layered in Single-Step Rotational Molding at the High-Speed Rotating”. Journal of Engineering, RMUTT 18, no. 1 (June 26, 2020): 153–164. Accessed May 7, 2024. https://ph01.tci-thaijo.org/index.php/jermutt/article/view/241895.