The Mann+Hummel Group is a German manufacturing group headquartered in Ludwigsburg within the metropolitan area of Stuttgart. The company develops, produces and distributes liquid and air filter systems, intake systems and thermal management components. Additional products include powertrain and engine plastic components, such as manifolds, ducts and cylinder head covers with integrated functions for the automotive industry, and aftermarket filter elements for the maintenance and repair of motor vehicles under several brands (Mann-Filter, Wix Filters, Filtron, Purolator). For general engineering, process engineering and industrial manufacturing sectors the product range includes industrial filters, membrane filters and equipment for water filtration. About 90 percent of annual sales of around 4 billion euros accounted for by the activity in the automotive industry. The company and its subsidiaries have more than 80 locations worldwide. The group is owned by the families of the two founders.