AXT, Inc. Announces Participation in UBS Global Technology and Services Conference

FREMONT, CA--(Marketwire - May 18, 2009) - AXT, Inc. (NASDAQ: AXTI), a leading manufacturer of compound semiconductor substrates, today announced that it is participating in the UBS Global Technology and Services Conference to be held at the Sheraton New York Hotel & Towers in New York City on Wednesday, June 10, 2009. Wilson W. Cheung, chief financial officer, and Robert G. Ochrym, vice president, business development, will be available for one-on-one meetings on June 10th. Interested investors may contact their UBS sales representative to schedule a meeting.

About AXT, Inc.

AXT designs, develops, manufactures and distributes high-performance compound and single element semiconductor substrates comprising gallium arsenide (GaAs), indium phosphide (InP) and germanium (Ge) through its manufacturing facilities in Beijing, China. In addition, AXT maintains its sales, administration and customer service functions at its headquarters in Fremont, California. The company's substrate products are used primarily in lighting display applications, wireless communications, and fiber optic communications. Its vertical gradient freeze (VGF) technique for manufacturing semiconductor substrates provides significant benefits over other methods and enabled AXT to become a leading manufacturer of such substrates, particularly in optoelectronics applications. AXT has manufacturing facilities in China and invests in five joint ventures producing raw materials. For more information, see AXT's website at http://www.axt.com.

Contact Information: Contacts: Wilson W. Cheung Chief Financial Officer (510) 683-5900 Leslie Green Green Communications Consulting, LLC (650) 312-9060