Donaldson Company, Inc. manufactures and sells filtration systems and replacement parts worldwide. It operates through two segments, Engine Products and Industrial Products. The Engine Products segment offers air filtration systems; exhaust and emissions systems; liquid filtration systems, including hydraulics, fuel, and lube systems; and replacement filters. This segment sells its products to original equipment manufacturers (OEM) in the construction, mining, agriculture, aerospace, defense, and truck markets; and to independent distributors, OEM dealer networks, private label accounts, and large equipment fleets. The Industrial Products segment provides dust, fume, and mist collectors; compressed air purification systems; air filtration systems for gas turbines; polytetrafluoroethylene membrane-based products; and specialized air and gas filtration systems for applications, including computer hard disk drives and semi-conductor manufacturing. This segment sells its products to various industrial dealers, distributors, OEMs of gas-fired turbines, and OEMs and end-users requiring filtration solutions and replacement filters. Donaldson Company, Inc. was founded in 1915 and is based in Minneapolis, Minnesota.