ESE vs TMUS

ESCO Technologies Inc.

ESCO Technologies Inc. produces and supplies engineered products and systems for industrial and commercial markets worldwide. It operates through three segments: Aerospace & Defense, Utility Solutions Group (USG), and RF Shielding and Test. The Aerospace & Defense segment designs and manufactures filtration products, including hydraulic filter elements and fluid control devices used in commercial aerospace applications; filter mechanisms used in micro-propulsion devices for satellites; and custom designed filters for manned aircraft and submarines. It also designs, develops, and manufactures elastomeric-based signature reduction solutions for U.S. naval vessels; and mission-critical bushings, pins, sleeves, and precision-tolerance machined components for landing gear, rotor heads, engine mounts, flight controls, and actuation systems for the aerospace and defense industries. The USG segment provides diagnostic testing solutions that enable electric power grid operators to assess the integrity of high-voltage power delivery equipment; and decision support tools for the renewable energy industry, primarily wind and solar. The RF Shielding and Test segment designs and manufactures RF test and secure communication facilities, acoustic test enclosures, RF and magnetically shielded rooms, RF measurement systems, and broadcast and recording studios; and RF absorptive materials and 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. It also provides services, such as calibration for antennas and field probes, chamber certification, field surveys, customer training, and various product tests. The company distributes its products through a network of distributors, sales representatives, direct sales teams, and in-house sales personnel. ESCO Technologies Inc. was incorporated in 1990 and is based in St. Louis, Missouri.

T-Mobile US Inc.

T-Mobile US, Inc., together with its subsidiaries, provides mobile communications services in the United States, Puerto Rico, and the United States Virgin Islands. The company offers voice, messaging, and data services to 102.1 million customers in the postpaid, prepaid, and wholesale markets. It also provides wireless devices, including smartphones, wearables, and tablets and other mobile communication devices, as well as wireless devices and accessories. In addition, the company offers services, devices, and accessories under the T-Mobile and Metro by T-Mobile brands through its owned and operated retail stores, app and customer care channels, and its websites. It also sells its devices to dealers and other third party distributors for resale through independent third-party retail outlets and various third-party websites. As of December 31, 2020, it operated approximately 108,000 macro towers and 69,000 small cell/distributed antenna system sites; and approximately 3,400 T-Mobile and Metro by T-Mobile retail locations, including stores and kiosks. The company was founded in 1994 and is headquartered in Bellevue, Washington.