Sanix Holdings Incorporated engages in environmental sanitation, renewable energy, and resource recycling businesses primarily in Japan. The company provides home sanitation services including termite eradication, underfloor and loft ventilation systems, foundation reinforcement, house reinforcement, and residential renovations; establishment sanitation solutions such as water supply and drainage facility conservation and management, building and condominium maintenance, and pest control; solar engineering encompassing the manufacture, sale, construction, and maintenance of photovoltaic solar systems and components for commercial and residential use, along with solar power storage batteries; environmental resources development involving industrial waste disposal, recycling, detoxification of waste liquids including organic waste, and conversion of waste plastics into fuel for electricity generation; and energy services comprising electricity retailing to households and corporations, as well as wholesale of solar power generation equipment. Founded in April 1975 and headquartered in Fukuoka City, Japan, Sanix Holdings operates through segments including Solar Engineering, Home Sanitation, Establishment Sanitation, PV Business, New Electricity Business, and Environmental Resources Development, targeting households, buildings, offices, restaurants, and corporate clients nationwide. In April 2025, the company transitioned to a holding company structure and changed its name from Sanix Incorporated to Sanix Holdings Incorporated; it also entered a business collaboration with Osaka Gas and Sanix Engineering in corporate solar power generation and resource circulation businesses.