Donaldson Company, Inc. (Donaldson) is a manufacturer of filtration systems and replacement parts. The Company’s product mix includes air and liquid filtration systems, and exhaust and emission control products. Donaldson has two segments: Engine Products and Industrial Products. Engine Products segment consist of products, which include air filtration systems, exhaust and emissions systems, liquid filtration systems, and replacement filters. Industrial Products segment consist of products, which include dust, fume and mist collectors, compressed air purification systems, liquid filters and parts, air filter systems, polytetrafluoroethylene (PTFE) membrane and laminates, and specialized air filtration systems for applications, including computer hard disk drives. On October 15, 2008, the Company acquired Western Filter Corporation. On October 31, 2008, Donaldson sold its dryer business in Maryville, Tennessee.