AXT designs, develops, manufactures, and distributes compound and single element semiconductor substrates using its proprietary vertical gradient freeze technology. It offers products such as indium phosphide, gallium arsenide, germanium substrates, and purified gallium for various applications in data center connectivity, 5G communications, solar cells, lasers, detectors, and autonomous vehicles. The company sells its products through direct salesforce and independent representatives globally, and is headquartered in Fremont, California.