On October 20, 2023. Professors from the Department of Civil and Environmental Engineering hosted the visiting lecturers and students from Universitas Pendidikan Nasional (Undiknas University), Indonesia for a study visit at the Department of Civil and Environmental Engineering. The purpose of this visit was to facilitate collaboration in academic and research development, technology, and innovation between the two institutions. Additionally, the guests had the opportunity to tour the Recycle Waste Bank and the bio-fertilizer fermentation station at Mahidol University.