Rofin-Sinar Confirms Financial Results Release Date

    Business Editors

    HAMBURG, Germany & PLYMOUTH, Mich.--(BUSINESS WIRE)--April 25, 2005--Rofin-Sinar Technologies Inc. (NASDAQ: RSTI), one of the world's leading developers and manufacturers of laser sources and laser-based solutions, confirmed today that its 2005 second quarter results will be released on Monday, May 9, 2005.
    Chief Financial Officer Gunther Braun will host a conference call at 5:00 PM (CET) / 4:00 PM (UK) / 11:00 AM (Eastern) / 8:00 AM (Pacific) that day. The conference call will be webcast live at http://www.rofin.com and will be available for replay purposes as well.
    The earnings announcement will be released at 8:00 AM (Eastern) and will be available on http://www.rofin.com.

    With operational headquarters in Plymouth, Michigan, and Hamburg, Germany, Rofin-Sinar Technologies Inc. designs, develops, engineers and manufactures laser sources and laser-based system solutions for a wide range of applications. With production facilities in the US, Germany, UK, Sweden, Singapore and Japan, Rofin-Sinar is one of the world's leading designers and manufacturers of industrial lasers and currently has more than 20,000 laser units installed worldwide and serves more than 3,000 customers. ROFIN-SINAR's shares trade on the Nasdaq National Market System under the symbol RSTI and on the "Prime Standard" of the Frankfurt Stock Exchange under the ISIN US7750431022. Additional information is available on Rofin-Sinar's home page: http://www.rofin.com.

--30--MW/ny*

CONTACT: Rofin-Sinar Thorsten Frauenpreiss, 011-49-40-733-63-256

KEYWORD: MICHIGAN GERMANY INTERNATIONAL EUROPE INDUSTRY KEYWORD: HARDWARE SOFTWARE EARNINGS CONFERENCE CALLS SOURCE: Rofin-Sinar Technologies Inc.

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