GAMMA OPTICAL CO said unconsolidated sales in April fell 21.11% to NT$94,507,000 from NT$119,798,000, according to a statement filed to the Taiwan Stock Exchange.

(Figures are in thousands of New Taiwan dollars)

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4/2012 4/2011 Sales 94,507 119,798 YOY% -21.11%

-----------------Year-to-date----------------- Sales 284,657 468,035 YOY% -39.18% =================================================================