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Nihon Genryo Co., Ltd.

Yasuhiro Saito

President

About the Company

Nihon Genryo, founded in 1939 and headquartered in Kawasaki, Japan, is a family-owned manufacturing company specializing in filter media (sand, gravel, anthracite, and specialty media) and water purification systems. Serving over 80% of Japanese municipal water treatment plants, the company offers granular filtration media, the innovative Mobile Siphon Tank for emergency water supply, and rehabilitation services for filter basins. With over 100 patents and more than 80 years of industry expertise, Nihon Genryo also extends its operations internationally through its WATER PLANet PROJECT. This initiative supplies safe, secure water across Asia—delivering mobile tanks and technical training to locations in Laos, Vietnam, the Philippines, Thailand, Mozambique, and other regions as part of ODA and disaster-relief programs. Their monotsukuri mindset emphasizes continuous improvement based on field lessons, ensuring technologies are robust in disaster zones and everyday sites alike. Nihon Genryo’s mission is to eliminate global water disparities by combining manufacturing excellence with humanitarian vision, bringing reliable water infrastructure to vulnerable communities worldwide.

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