Parker-Hannifin Corporation specializes in motion and control technologies. The Company designs, manufactures, and provides aftermarket support for highly engineered solutions. Its segments include Diversified Industrial and Aerospace Systems. Diversified Industrial Segment, which is an aggregation of several business units, sells highly engineered differentiated products to both original equipment manufacturers (OEMs) and distributors who serve the aftermarket replacement markets. This segment serves various markets, including aerospace & defense, off-highway, in-plant & industrial equipment, energy, transportation and HVAC & refrigeration. Aerospace Systems Segment sells highly engineered, differentiated airframe and engine components and systems to OEMs and aftermarket parts and maintenance directly to end users primarily in the commercial aerospace and defense market verticals. Its products include fuel systems & components, avionics, flight control systems, and others.