rungfar, yingyong, Wattanajiraphan, T., Rotsakunphanit, C., & Pongpunyayuen, P. (2025). Product Design for Food Containers from Coconut Shell Scraps. Rajamangala University of Technology Tawan-ok Research Journal, 18(2), 89–103. https://doi.org/10.63271/rmuttorj.v18i2.261368