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AXT, Inc. designs, develops, manufactures, and distributes compound and single element semiconductor substrates. The company offers indium phosphide for use in data center connectivity using light/lasers, high-speed data transfer in data centers, 5G communications, fiber optic lasers and detectors, consumer devices, passive optical networks, silicon photonics, photonic integrated circuits, thermo-photovoltaics, RF amplifier and switching, infrared light-emitting diode (LEDS) motion control, lidar for robotics and autonomous vehicles, and infrared thermal imaging. It also provides semi-insulating gallium arsenide (GaAs) substrates for use in Wi-Fi and IoT devices, transistors, direct broadcast television, power amplifiers, satellite communications, and solar cells; and semi-conducting GaAs substrates that are used in LEDs, screen displays using micro-LEDs, printer head lasers and LEDs, 3-D sensing using VCSELs, data center communication using VCSELs, sensors for industrial robotics/near-infrared sensors, optical couplers, solar cells, night vision goggles, lidar for robotics and autonomous vehicles, and other lasers, as well as laser machining, cutting, and drilling. In addition, the company offers germanium substrates for use in multi-junction solar cells for satellites, optical sensors and detectors, terrestrial concentrated photo voltaic cells, infrared detectors, and carrier wafer for LED. Further, it provides 6N+ and 7N+ purified gallium, boron trioxide, gallium-magnesium alloy, pyrolytic boron nitride (pBN) crucibles, and pBN insulating parts. It sells its products through direct salesforce in the United States, China, and Europe, as well as through independent sales representatives and distributors in Japan, Taiwan, Korea, and internationally. The company was formerly known as American Xtal Technology, Inc. and changed its name to AXT, Inc. in July 2000. AXT, Inc. was incorporated in 1986 and is headquartered in Fremont, California.

DSP Group, Inc. provides wireless chipset solutions for converged communications. It operates through the following segments: Home, Unified Communications, and SmartVoice. The Home segment offers wireless chipset solutions at home. The Unified Communications segment provides office solutions that offer businesses of all sizes VoIP terminals with converged voice and data applications. The SmartVoice segment provides intelligent voice enhancement and noise elimination. The company was founded in 1987 and is headquartered in San Jose, CA.

NeoPhotonics Corporation develops, manufactures, and sells optoelectronic products that transmit and receive high speed digital optical signals for cloud and hyperscale data center internet content provider and telecom networks. It offers transmitter and receiver components, and coherent modules, as well as switching products for 400G and optical transmission applications over distances of approximately 2 to 2,000 kilometers; ultra-narrow linewidth tunable lasers; electro-absorptively modulated lasers; distributed feedback lasers; component lasers; and integrated coherent receivers and modulators. The company also provides pluggable coherent transceivers that combine ultra-narrow linewidth laser with coherent receiver and performance coherent modulator; and 100G products for data center applications. In addition, it offers multi-cast switching solutions for 100G and above coherent systems; and network products and solutions, such as arrayed waveguide gratings, multiplexers, and filters that are used in dense wavelength division multiplexing systems. NeoPhotonics Corporation sells its products to network equipment manufacturers through a direct sales force in North America; Europe; and Asia, including China, Japan, Korea, and Taiwan. The company was formerly known as NanoGram Corporation and changed its name to NeoPhotonics Corporation in 2002. NeoPhotonics Corporation was incorporated in 1996 and is headquartered in San Jose, California.

NVE Corporation develops and sells devices that use spintronics, a nanotechnology that relies on electron spin to acquire, store, and transmit information in the United States and internationally. The company manufactures spintronic products, including sensors and couplers for use in acquiring and transmitting data. Its products comprise standard sensors to detect the presence of a magnetic or metallic material to determine position, rotation, or speed for the factory automation market; and custom and medical sensors for medical devices to replace electromechanical magnetic switches. The company also offers spintronic couplers for power conversion and industrial Internet of Things (IIoT) market; and DC-to-DC convertors for use in power conversion systems and industrial networks for the IIoT. In addition, it undertakes contracts for research and development, and licensing of spintronic magnetoresistive random access memory technology. NVE Corporation was founded in 1989 and is headquartered in Eden Prairie, Minnesota.

Emeren Group Ltd, through its subsidiaries, develops, builds, operates, and sells solar power projects. It owns and operates 3 gigawatt pipeline of projects and independent power producer assets. The company also develops community solar gardens; and sells project rights. In addition, it engages in engineering design; procurement of solar modules; balance-of-system components and other components; and construction contracting and management services. Further, the company generates and sells electricity. It operates in China, United States, UK, Spain, France, Poland, Italy, Hungary, and Internationally. The company was formerly known as ReneSola Ltd and changed its name to Emeren Group Ltd in January 2023. Emeren Group Ltd was founded in 2005 and is headquartered in Stamford, Connecticut.