UMC Reports Sales for March 2012

UMC Reports Sales for March 2012 Taipei, Taiwan, April 9, 2012--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of March 2012.

Revenues for March 2012

Period	2012	2011	Y/Y Change	Y/Y (%)	M/M (%)
March	8,190,818	9,585,283	-1,394,465	-14.55%	+8.87%
Jan.-Mar.	23,765,181	28,117,850	-4,352,669	-15.48%	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.