TAIPEI, Taiwan, May 8 /PRNewswire-Asia-FirstCall/ -- United Microelectronics Corporation (NYSE: UMC), (UMC) today reported unaudited net sales for the month of April 2009.

    Revenues for April 2009
    Period         2009          2008       Y/Y Change    Y/Y (%)    M/M (%)
    April        6,877,372     8,521,260    -1,643,888    -19.29%   +51.44%
    Jan.-Apr.   17,715,508    32,524,170   -14,808,662    -45.53%       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 / Tien Yu Tseng
     UMC, Investor Relations
     Tel.   +886-2-2700-6999, ext. 6957
     Email: bowen_huang@umc.com
            tien_yu_tseng@umc.com

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