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Dynasil Corporation of America develops, markets, manufactures, and sells detection, sensing, and analysis technology and optical components in the United States, Asia, Europe, and internationally. It operates through Optics, Innovation and Development, and Biomedical segments. The Optics segment supplies synthetic crystals, optical materials, components, and coatings that are used in devices, such as baggage scanners, medical imaging systems, optical instruments, lasers, analytical instruments, automotive components, semiconductor/electronic devices, spacecraft/aircraft components, and advertising displays in the medical, industrial, and homeland security/defense sectors. The Innovation and Development segment develops advanced technology in materials, sensors, and prototype instruments that detect or measure radiation, light, magnetism, or sound for use in security, medical, and industrial applications. The Biomedical segment engages in the development of tissue sealant products. The company distributes its products through direct sales and marketing staff, as well as through manufacturer's representatives and distributors. Dynasil Corporation of America was founded in 1960 and is headquartered in Newton, Massachusetts.

Franklin Wireless Corp. provides integrated wireless solutions. The company's products include 5G/4G wireless broadband products, such as wi-fi mobile hotspot, fixed wireless routers, and enterprise gateway CPE; and IoT tracking and connected devices, including smart IoT tracking device, connected car, and home phone connect. It also offers IOT server platform and application, which comprises Pintrac, a cloud based telecom grade server platform; Pintrac Mobile Device Management, an LTE hotspot; Pintrac Pet, a pet tracking application; Pintrac Auto that tracks, locates, and manages vehicles for consumers and businesses; and JEXtream, a cloud based telecom grade server platform for 5G devices and routers that enables enhanced remote management of device functionality. The company directly markets and sells its products to wireless operators, as well as indirectly through strategic partners and distributors located primarily in the North America, the Caribbean and South America, and Asia. Franklin Wireless Corp. was founded in 1981 and is headquartered in San Diego, California.

Rubicon Technology, Inc. provides monocrystalline sapphire for applications in optical and industrial systems in North America, Asia, and internationally. The company offers optical and industrial sapphire products in various shapes and sizes, including sheets, rods, tubes, core, ingots, and prisms for a range of end markets comprising defense and aerospace, specialty lighting, instrumentation, sensors and detectors, semiconductor process equipment, electronic substrates, medical, and laser applications. It serves defense subcontractors, industrial manufacturers, fabricators, and resellers. The company was incorporated in 2001 and is based in Bensenville, Illinois.