Donaldson Company, Inc. engages in the manufacture and sale of filtration systems and replacement parts worldwide. The company operates in two segments, Engine Products and Industrial Products. The Engine Products segment offers air filtration systems, exhaust and emissions systems, liquid filtration systems, and replacement filters. This segment sells its products to original equipment manufacturers (OEM) in the construction, mining, agriculture, aerospace, defense, and truck markets, as well as to OEM dealer networks, independent distributors, 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; PTFE membrane-based products; and specialized air filtration systems for applications, including computer hard disk drives. This segment sells its products to various industrial end-users, OEMs of gas-fired turbines, and OEMs and end-users requiring clean air. Donaldson Company, Inc. was founded in 1915 and is headquartered in Minneapolis, Minnesota.