BTU International First Quarter 2005 Earnings Conference Call

Business Wire, April 19, 2005

NORTH BILLERICA, Mass. -- BTU International, Inc. (Nasdaq NM:BTUI), the leading supplier of advanced thermal processing equipment used for printed circuit board assembly, semiconductor packaging and advanced materials processing, will hold its quarterly conference call to discuss first quarter 2005 results and second quarter 2005 outlook on Friday, April 22, 2005, at 11:00 a.m. Eastern Time (10 a.m. Central Time).

The dial-in number to participate in the conference call by telephone is (877) 236-1078. This call is being webcast by Thomson/CCBN and can be accessed at BTU's Web site at www.btu.com.

The webcast is also being distributed through the Thomson StreetEvents Network to both institutional and individual investors. Individual investors can listen to the call at www.fulldisclosure.com, Thomson/CCBN's individual investor portal, powered by StreetEvents. Institutional investors can access the call via Thomson's password-protected event management site, StreetEvents (www.streetevents.com).

About BTU International

BTU International is a market-leading supplier of advanced thermal processing equipment to the semiconductor, electronics, and materials sectors. BTU manufactures a wide range of equipment for semiconductor packaging applications, including state-of-the-art systems for wafer bumping and wafer-level packaging. The company is also a major manufacturer of solder reflow furnaces for printed circuit board assembly, and advanced systems for materials processing applications requiring high temperatures and precise atmosphere control. BTU, with world headquarters in North Billerica, Mass., operates worldwide with direct sales and service offices in the USA, Asia and Europe. BTU International's stock is publicly traded on the NASDAQ National Market under the symbol "BTUI." For more information, visit www.btu.com.