PRIME OPTICAL said unconsolidated sales in May rose 5.18% to NT$17,153,000 from NT$16,309,000, according to a statement filed to the Taiwan Stock Exchange.

(Figures are in thousands of New Taiwan dollars)

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5/2012 5/2011 Sales 17,153 16,309 YOY% 5.18%

-----------------Year-to-date----------------- Sales 64,057 45,485 YOY% 40.83% =================================================================