Parker Hannifin Corporation manufactures fluid power systems, electromechanical controls, and related components worldwide. Its Industrial segment offers pneumatic and electromechanical components, and systems; filters, systems, and instruments to monitor and remove contaminants from fuel, air, oil, water, and other liquids and gases; connectors that control, transmit, and contain fluid; hydraulic components and systems for builders and users of industrial and mobile machinery and equipment; critical flow components for process instrumentation, healthcare, and ultra-high-purity applications; and static and dynamic sealing devices. This segment sells its products to original equipment manufacturers (OEMs) and their replacement markets in the manufacturing, transportation, and processing industries. The company's Aerospace segment provides flight control systems and components, including hydraulic, electrohydraulic, electric backup hydraulic, electrohydrostatic, and electro-mechanical components for precise control of aircraft rudders, elevators, ailerons, and other aerodynamic control surfaces. It also provides electronics thermal management heat rejection systems, and single-phase and two-phase heat collection systems for radar, ISAR, and power electronics. This segment markets its products primarily to OEMs in the commercial, military, and general aviation markets, as well as to end users. Its Climate and Industrial Controls segment offers systems and components primarily for use in the mobile and stationary refrigeration, and air conditioning industry; and in fluid control applications in various industries, such as processing, fuel dispensing, beverage dispensing, and mobile emissions. This segment serves OEMs and their replacement markets. Parker-Hannifin Corporation markets its products through direct-sales employees, independent distributors, wholesalers, and sales representatives. The company was founded in 1918 and is headquartered in Cleveland, Ohio.