ESCO Technologies Inc. serves global industrial and commercial markets by offering specialized engineered products and sophisticated systems. The company operates through three primary business units: Aerospace & Defense, Utility Solutions Group, and RF Shielding and Test. The Aerospace & Defense division focuses on the creation and manufacturing of advanced filtration products, including hydraulic filter elements and fluid control devices for commercial aviation, unique filter mechanisms for satellite micro-propulsion, and bespoke filters for both crewed aircraft and submarines. This segment also develops and produces elastomeric-based solutions aimed at reducing the signature of U.S. naval vessels. Furthermore, it supplies essential, precision-machined components such as bushings, pins, sleeves, and other intricately crafted parts, which are critical for aircraft systems like landing gear, rotor heads, engine mounts, flight controls, and actuation systems within the aerospace and defense sectors. The Utility Solutions Group provides vital diagnostic testing capabilities, enabling operators of electric power grids to effectively assess the integrity of high-voltage power transmission equipment. Additionally, this group furnishes decision-making support tools specifically designed for the renewable energy industry, with a particular focus on wind and solar power generation. The RF Shielding and Test segment is dedicated to designing and manufacturing specialized facilities, such as RF test environments, secure communication sites, acoustic test chambers, RF and magnetically shielded rooms, and broadcasting and recording studios. Its product range encompasses RF absorptive materials and filters, active compensation systems, a variety of antennas and their associated masts, turntables, electric and magnetic probes, RF test cells, proprietary measurement software, and numerous other test accessories used for diverse testing applications. Complementing its product offerings, this segment delivers a comprehensive suite of services, including calibration for antennas and field probes, chamber certification, field surveys, customer training, and various product testing procedures. ESCO Technologies distributes its products and services through a multifaceted network comprising independent distributors, external sales representatives, dedicated direct sales teams, and its own internal sales personnel. The company was founded in 1990 and is headquartered in St. Louis, Missouri.