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
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