• Sapporo Office
• Morioka Office
• Sendai Branch
• Fukushima Office
• Utsunomiya Office
• Saitama Branch
• Tokyo Btranch
• Niigata Office
• Yokohama Branch
• Matsumoto Office
• Nagoya Branch
• Kanazawa Branch
• Kyoto Branch
• Osaka Branch
• Kobe Branch
• Okayama Office
• Hiroshima Branch
• Takamatsu Office
• Fukuoka Branch
• Minami Kyushuu Office

Maintenance service center in Japan

• Chiba
• Setagaya
• Shizuoka
• Minami Osaka
• Hanna

Reserch & Institute of Functional Water

• The University of Tokyo