Rex Systems Incorporated

Defense and Space ManufacturingWisconsin, United States11-50 Employees

Rex Systems Incorporated is a defense and space manufacturing company based in Chippewa Falls, Wisconsin, founded in 1973. It designs, engineers, manufactures, and tests military electronic components and assemblies, including build-to-print spares and build-to-specification systems, with capabilities spanning reverse engineering, redesign engineering, test procedure development, and environmental and reliability testing. The firm emphasizes in-house development and rapid prototyping to support a diverse set of electronic components for legacy and current military systems, such as radar, gun and missile fire control, sonar, fathometers, and tactical communications. As a small business with a substantial manufacturing footprint on a 60-acre campus, Rex Systems positions itself to scale to meet large contract demands and has a history of acting as a prime contractor on U.S. military contracts. The company maintains compliance and quality controls through ISO 9001:2015 certification and regularly audited accounting systems aligned with U.S. defense regulations, supporting its role as a trusted supplier for government defense programs.

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