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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.

Kopin Corporation, together with its subsidiaries, invents, develops, manufactures, and sells microdisplays, subassemblies, and related components for defense, enterprise, industrial, and consumer products in the United States, the Asia-Pacific, Europe, and internationally. It offers miniature active-matrix liquid crystal displays, liquid crystal on silicon displays/spatial light modulators, organic light emitting diode displays, microLED display technologies, application specific integrated circuits, backlights, and optical lenses; and head-mounted and hand-held VR products. The company's products are used for soldier thermal weapon rifle sights, avionic fixed and rotary wing pilot helmets, armored vehicle targeting systems, and training and simulation headsets; industrial and medical headsets; 3D optical inspection systems; and consumer augmented reality and virtual reality wearable headsets systems. Kopin Corporation was incorporated in 1984 and is headquartered in Westborough, Massachusetts.

Maxeon Solar Technologies, Ltd. designs, manufactures, markets, and sells solar panels and related solar system components worldwide. The company provides interdigitated back contact and shingled solar cells and panels under the SunPower brand. It offers its products to dealers, project developers, system integrators, distributors, resellers, and residential and small-scale commercial customers. The company was incorporated in 2019 and is headquartered in Singapore.

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.

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.