ESCO Technologies Inc., through its subsidiaries, produces and supplies engineered products and systems for utility, industrial, aerospace, and commercial applications worldwide. It operates through three segments: Filtration/Fluid Flow (Filtration); RF Shielding and Test (Test); and Utility Solutions Group (USG). The Filtration segment supplies filtration and fluid control products, including filter elements, manifolds, assemblies, modules, indicators, custom and standard valves, filters, regulators, actuators, and other related components; and produces engineered thermoformed products and packaging materials. The Test segment designs, manufactures, and supplies a range of isolated environments and turnkey systems, such as RF test facilities, acoustic test enclosures, RF and magnetically shielded rooms, secure communication facilities, RF measurement systems, and broadcast and recording studios; and components that include RF absorptive materials, RF filters, active compensation systems, antennas, antenna masts, turntables, electric and magnetic probes, RF test cells, proprietary measurement software, and other test accessories to perform various tests. This segment also provides services, including calibration for antennas and field probes, chamber certification, field surveys, customer training, and various product tests. The USG segment develops, manufactures, and delivers diagnostic testing solutions, which include electric power grid and enterprise management systems for electrical equipment. This segment’s solutions include Doble Protection suite and F6000 series for protection diagnostics; M4100 and M7100 Doble Tester technology; and dobleARMS, asset risk management system solutions. The company distributes its products primarily through a network of distributors, sales representatives, direct sales teams, and in-house sales personnel. ESCO Technologies Inc. was founded in 1990 and is headquartered in St. Louis, Missouri.