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AXT is a material science company that develops and manufactures high-performance compound and single element semiconductor wafer substrates comprising indium phosphide (InP), gallium arsenide (GaAs) and germanium (Ge).   The company’s wafer substrates are used when a typical silicon wafer substrate cannot meet the performance requirements of a semiconductor or optoelectronic device.  End markets include 5G infrastructure, data center connectivity (silicon photonics), passive optical networks, medical/well-being testing, LED lighting, lasers, sensors, power amplifiers for wireless devices and satellite solar cells.  AXT’s worldwide headquarters are in Fremont, California and includes sales, administration and customer service functions.   AXT’s subsidiary in China (“Tongmei”) has similar functions as well as manufacturing facilities to produce wafer substrates.  In addition, as part of the supply chain strategy, AXT, Tongmei and Tongmei subsidiaries collectively have partial ownership in ten companies in China producing raw materials. For more information, see AXT’s website at

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Contact Information

Gary Fischer                
Chief Financial Officer
AXT, Inc.
4281 Technology Drive
 Fremont, CA 94538
Tel: (510) 438-4700
 Fax: (510) 353-0668


Leslie Green                
Green Communications Consulting, LLC
Tel: (650) 312-9060