MAEZAWA Holdings Co., Ltd. is a holding company that, through its subsidiaries Maezawa Industries and MAEZAWA KASEI INDUSTRIES, oversees the design, manufacture, and sale of water supply, sewage, and environmental equipment. The group's products include valves, water and wastewater treatment systems, and industrial water treatment facilities, and it also provides related maintenance services for municipal and industrial infrastructure across Japan. The holding company's stated purpose is the management and administration of these subsidiaries and their related business activities.