TAIPEI, Taiwan, May 8 /Xinhua-PRNewswire-FirstCall/ -- United Microelectronics Corporation (NYSE: UMC) (UMC) today reported unaudited net sales for the month of April 2008.

    Revenues for April 2008

    Period         2008          2007     Y/Y Change   Y/Y (%)    M/M (%)

    April        8,521,260    8,131,493     389,767    +4.79%      +0.27%
    Jan.-Apr.   32,524,170   31,156,724   1,367,446    +4.39%         N/A


    (*) All figures in thousands of New Taiwan Dollars (NT$), except for
        percentages.


    Additional information about UMC is available on the web at
http://www.umc.com .

    Contacts:

    Bowen Huang / I Cheng Lu
    UMC, Investor Relations
    Tel:   +886-2-2700-6999, ext. 6957
    Email: bowen_huang@umc.com
           i_cheng_lu@umc.com

Web site: http://www.umc.com/