For the past 50 years, Thetford has been recognized as the world’s market leader in mobile sanitary systems and toilet additives, refrigerators and cooking equipment. Thetford is the global supplier for the Recreational Vehicles industry, the Marine market, Health & Care and Residential market. Headquartered in Ann Arbor, Michigan, Thetford is a privately-held and multi-industry international company with seven manufacturing facilities in four nations.