UMC Reports Sales for February 2012

Taipei, Taiwan, March 8, 2012--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of February 2012.

Revenues for February 2012
                                                                                      

                                                                        
(*)  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.

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