Massa engineers and manufactures sonar and ultrasonic products for use in the ocean, air and fluids. We are the eyes and ears for naval ships and submarines that protect the U.S. coastline with our undersea technologies. Founded by the man who pioneered the field of electroacoustics more than 70 years ago, Frank Massa, the company maintains family ownership and leadership. Our products are for sale in commercial or industrial markets, and to the military. We are set apart by our ability to solve problems in various fields and environments with our electroacoustical expertise – we often tailor our designs to fit customer needs when applicable. Massa is ISO 9001:2015 certified, and has been awarded over 165 U.S. Patents in sonar and ultrasonic technology.

Tech/Ops Sevcon is organized into two business segments: Sevcon manufactures electric motor controllers and system components for battery-powered vehicles, and ICW manufactures special metallized film capacitors for electronics applications. These capacitors are used as components in the power electronics, signaling and audio equipment markets. Sevcon markets these products to a global customer base that ranges from forklift truck manufacturers to electric scooter manufacturers. ICW is located in the United Kingdom. Founded in 1968, Tech/Ops Sevcon also has subsidiaries in Tokyo, Paris and Seoul, Korea. Tech/Ops Sevcon does not offer a direct stock purchase plan. Tech/Ops Sevcon common stock can be bought or sold through a financial institution that provides brokerage services. The Sevcon segment, located in Scarborough, Mass., produces AC controllers, DC controllers, electric steering systems, pump motors, displays and gauges, battery chargers and DC converters.

Founded in 1916, Sensata Technologies is one of the world s leading suppliers of sensing, electrical protection, and control and power management solutions. The company maintains business and product development centers in the United States, the Netherlands and Japan. It also has manufacturing operations in Brazil, China, South Korea, Malaysia, Mexico and the Dominican Republic. Sensata Technologies employs more than 9,000 professionals. The company serves the automotive, appliance, aircraft, industrial, military, heating, air conditioning, telecommunications, recreational vehicle and marine markets. It offers a variety of airflow, analytical, automotive, pressure and temperature sensors. Sensata Technologies also provides various protection and control devices, such as battery protectors, fuses, switches and thermostats. The company offers products under the AIRPAX, DIMENSIONS, Klinox and First Technology brands.