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Applied Optoelectronics, Inc. designs, manufactures, and sells fiber-optic networking products in the United States, Taiwan, and China. It offers optical modules, optical filters, lasers, laser components, subassemblies, transmitters and transceivers, turn-key equipment, headend, node, distribution equipment, and amplifiers. The company sells its products to internet data center operators, cable television, telecom equipment manufacturers, fiber-to-the-home, and internet service providers through its direct and indirect sales channels. Applied Optoelectronics, Inc. was incorporated in 1997 and is headquartered in Sugar Land, Texas.

Alpha and Omega Semiconductor Limited designs, develops, and supplies power semiconductor products for computing, consumer electronics, communication, and industrial applications in Hong Kong, China, South Korea, the United States, and internationally. It offers power discrete products, including metal-oxide-semiconductor field-effect transistors (MOSFET), SRFETs, XSFET, electrostatic discharge, protected MOSFETs, high and mid-voltage MOSFETs, and insulated gate bipolar transistors for use in smart phone chargers, battery packs, notebooks, desktop and servers, data centers, base stations, graphics card, game boxes, TVs, AC adapters, power supplies, motor control, power tools, E-vehicles, white goods and industrial motor drives, UPS systems, solar inverters, and industrial welding. The company also provides power ICs that deliver power, as well as control and regulate the power management variables, such as the flow of current and level of voltage. Its power ICs are used in flat panel displays, TVs, notebooks, graphic cards, servers, DVD/Blu-Ray players, set-top boxes, and networking equipment. In addition, the company offers 650V SiC MOSFET, a switching solutions for solar inverters, motor drives, industrial power supplies, and energy storage systems. Further, it provides 750V SiC MOSFET for electric vehicle systems such as the on-board charge; transient voltage suppressors; silicon carbide product for industrial applications, such as solar inverters, UPS, and battery management systems. Alpha and Omega Semiconductor Limited was incorporated in 2000 and is headquartered in Sunnyvale, California.

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.

GSI Technology, Inc. designs, develops, and markets semiconductor memory solutions to networking, industrial, medical, aerospace, and military customers in the United States, China, Singapore, Germany, the Netherlands, and internationally. It offers associative processing unit products, which are focuses on applications using similarity search in visual search queries for ecommerce, computer vision, drug discovery, cyber security, and service markets. The company also provides static random access memory (SRAM) products, such as SyncBurst for microprocessor cache and other applications; No Bus Turnaround SRAMs to address the needs of networking and telecom applications; SigmaQuad and SigmaDDR products for density and random transaction rate requirements of networking and telecom applications; Low Latency DRAMs, a solution for advanced data networking applications; Asynchronous, a main memory for small cache-less embedded processors for industrial electronics, measurement systems and cost-sensitive networking equipment, and other applications; and specialty SRAMs. In addition, it offers radiation-hardened and radiation-tolerant SRAMs for military/defense and aerospace applications, such as networking satellites and missiles. The company's products are used as components in its original equipment manufacturer customers' products, including routers, switches, and other networking and telecommunications products; military and aerospace applications, such as radar and guidance systems and satellites; test and measurement applications consisting of high-speed testers; automotive applications comprising smart cruise control; medical applications, including ultrasound and CAT scan equipment; and audio/video processing. It markets its products through a network of independent sales representatives and distributors. GSI Technology, Inc. was incorporated in 1995 and is headquartered in Sunnyvale, 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.