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QualTek Services Inc. provides communications infrastructure, power grid modernization, and renewable solutions to telecommunications and utilities industries in the United States. It operates through two segments, Telecom, and Renewables & Recovery Logistics. The Telecom segment engages in the installation, project management, maintenance, real estate, and site acquisition; fiber optic aerial and underground installation, fiber optic splicing, termination and testing, new installation, engineering, and fulfillment services to telecommunication companies; and electrical contracting, and utility construction and maintenance services to municipalities, electric membership cooperatives, and electric-utility companies, including the construction and maintenance of overhead and underground distribution systems. The Renewables and Recovery Logistics segment offers installation, testing, and maintenance for wind farms, solar farms, and fiber optic grids; continuity, restoration, and disaster relief services to renewable energy, commercial, telecommunications and power utility companies; and business-as-usual services, such as generator storage, as well as repair and cell maintenance services. QualTek Services Inc. was founded in 2012 and is headquartered in Blue Bell, Pennsylvania. On May 24, 2023, QualTek Services Inc., along with its affiliates filed a voluntary petition for reorganization under Chapter 11 in the U.S. Bankruptcy Court for the Southern District of Texas.

Research Frontiers Incorporated engages in the development and marketing of technology and devices to control the flow of light worldwide. It develops and licenses suspended particle device (SPD-Smart) light-control technology to companies that manufacture and market the SPD-Smart chemical emulsion, light-control film made from the chemical emulsion, the light-control panels made by laminating the film, and electronics to power end-products incorporating the film, as well as lamination services for and the end-products, such as windows, skylights, and sunroofs. The company's SPD-Smart light-control technology is used in various product applications, including windows, sunshades, skylights, and interior partitions for homes and buildings; automotive windows, sunroofs, sun-visors, sunshades, rear-view mirrors, instrument panels, and navigation systems; aircraft windows; museum display panels, and eyewear products; and flat panel displays for electronic products. It serves architectural, automotive, marine, and aerospace and appliance applications. The company was incorporated in 1965 and is headquartered in Woodbury, 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.

VirnetX Holding Corporation, through its subsidiary VirnetX, Inc., operates as an Internet security software and technology company primarily in the United States. The company develops software and technology solutions, including secure domain name registry and GABRIEL Connection Technology that are designed to secure communications over the Internet using zero trust network access. It also offers a portfolio of licenses and services, such as VirnetX One, a security-as-a-service platform that protects enterprise applications, services, and infrastructure from cyber-attacks; GABRIEL Connection Technology software development kit to assist with rapid integration of its techniques into existing software implementations; War Room software that offers safe and secure video conferencing meeting environment where sensitive communications and data is invisible to those not authorized to view it; and VirnetX Matrix that provides security for internet-enabled enterprise applications and their connected devices. In addition, the company provides GABRIEL Collaboration Suite that enables seamless and secure cross-platform communications between users' devices. It serves domain infrastructure and communication service providers, and system integrators; and enterprise customers, developers, and original equipment manufacturers of chips, servers, desktops, smart phones, tablets, laptops, net books, and other devices in the IP-telephony, mobility, fixed-mobile convergence, and unified communications markets. The company has a partnership with ObjectSecurity LLC to provide secure cyber vulnerability analysis in private cloud environments. VirnetX Holding Corporation was incorporated in 2005 and is headquartered in Zephyr Cove, Nevada.