On Monday 17th Nov. 2025, the Faculty of Hydrology & Water Resources Engineering of the Institute of Technology of Cambodia – សាលាតិចណូ hosted a special Seminar on Roca Roca drinking water filtration for safe and comfortable water and life. During the seminar Dr. Chhuon Kong, dean of the faculty also welcome Prof. Prof. Nishida Kei from University of Yamanashi and his team who invented Roca Roca portable water filtration system, he also shared about academic program and research on water and environment at ITC to all participants. Prof. Prof. Nishida Kei has demontrated the Roca Roca portable water filter system.