Parker-Hannifin Corporation operates primarily through two segments: Diversified Industrial and Aerospace Systems. The Diversified Industrial segment provides highly engineered products, such as filtration solutions, fluid connectors, and sealing technologies, to original equipment manufacturers (OEMs) and distributors across off-highway, transportation, and energy markets. The Aerospace Systems segment supplies airframe and engine components, flight control systems, and vibration control solutions to commercial and military aerospace customers. A significant portion of the company's revenue is derived from aftermarket sales, providing a stable, recurring revenue stream. Headquartered in Cleveland, Ohio, Parker-Hannifin maintains a vast global footprint and supports a massive network of independent retail locations known as ParkerStores.