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Data I/O Corporation, together with its subsidiaries, engages in the design, manufacture, and sale of programming and security deployment systems and services for electronic device manufacturers in the United States, Europe, and internationally. Its programming system products are used to program integrated circuits (ICs) with the specific data necessary for the ICs. The company offers PSV handlers off-line automated programming systems, such as PSV2800 automated programming system which focuses on high-volume manufacturing in a lower cost platform; PSV7000 automated programming system, for security deployment upgrades; PSV5000 automated programming system that combines mid-range capacity and supports security deployment; and PSV3500 automated programming system which provides basic programming needs. It also provides SentriX security deployment system; and non-automated LumenX and FlashPAK III programming systems. In addition, the company offers hardware support, system installation and repair, and device programming services. It markets and sells its products to original equipment manufacturers in automotive and consumer electronics, internet of things, and industrial, as well as electronic manufacturing service contract manufacturers through direct sales, and indirect sales representatives and distributors. Data I/O Corporation was incorporated in 1969 and is headquartered in Redmond, Washington.

Deswell Industries, Inc. manufactures and sells injection-molded plastic parts and components, electronic products and subassemblies, and metallic molds and accessory parts for original equipment manufacturers and contract manufacturers. It operates through two segments, Plastic Injection Molding and Electronic Products Assembling. The company produces a range of plastic parts and components that are used in the manufacture of consumer and industrial products, which include plastic components for electronic entertainment products, power tools, accessories, and outdoor equipment; cases for flashlights, telephones, printers, scanners; parts for industrial components, and indoor control switches, as well as parts for audio equipment, and cases and key tops for personal organizers and remote controls; double injection caps; parts for medical products comprising apparatus for blood tests; laser key caps; automobile components; and plastic components of automatic robot. It also provides electronic products that consist of audio equipment, including digital and analogue mixing consoles, amplifiers, signal processors, audio interfaces, network audio equipment, and speaker enclosures; consumer audio products, such as multi-channel receivers-amplifiers, wired and wireless audio streaming products, and headphones; printed circuit board assemblies; and IoT medical products. The company operates in China, the United States, Europe, Hong Kong, the United Kingdom, Canada, and internationally. Deswell Industries, Inc. was founded in 1987 and is based in Macau.

Frequency Electronics, Inc., together with its subsidiaries, engages in designing, development, and manufacturing of precision time and frequency control products and components for microwave integrated circuit applications. It operates through two segments, FEI-NY and FEI-Zyfer. The FEI-NY segment offers precision time and frequency control products for communication satellites, terrestrial cellular telephone or other ground-based telecommunication stations; and other components and systems for the U.S. military; and provides design and technical support for satellite business. FEI-Zyfer segment offers global positioning system technologies to systems and subsystems for secure communications, both government and commercial, and other locator applications; and engages in sale and support of wireline telecommunications products, including US5G. It markets its products directly and through independent sales representative organizations located in the United States, Europe, and Asia. Frequency Electronics, Inc. was founded in 1961 and is headquartered in Mitchel Field, New York.

RF Industries, Ltd., together with its subsidiaries, designs, manufactures, and markets interconnect products and systems in the United States, Canada, Italy, Mexico, and internationally. The company operates through two segments, RF Connector and Cable Assembly, and Custom Cabling Manufacturing and Assembly. The company designs, manufactures, and distributes various coaxial connectors and cable assemblies that are integrated with coaxial connectors; custom copper and fiber cable assemblies, complex hybrid fiber optic and power solution cables, adapters, and electromechanical wiring harnesses for communication, computer, LAN, automotive, and medical equipment; energy-efficient cooling systems for wireless base stations and remote equipment shelters; and custom-designed pole-ready 5G small cell integrated enclosures. It also designs and manufactures cable assemblies and wiring harnesses for blue chip industrial, oilfield, instrumentation, medical, and military customers; connectivity solutions to telecommunications and data communications distributors; thermal control systems; and radio frequency and microwave distribution system products, such as dividers, directional couplers, and filters. The company sells its products through warehousing distributors and in-house marketing and sales team. It serves telecommunications carriers and equipment manufacturers, wireless and network infrastructure carriers, and original equipment manufacturers. The company was formerly known as Celltronics, Inc. and changed its name RF Industries, Ltd. in November 1990. RF Industries, Ltd. was incorporated in 1979 and is headquartered in San Diego, California.