MKS CORP (3507) said unconsolidated sales in May fell 13.02% to NT$26,606,000 from NT$30,589,000, 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 26,606 30,589 YOY% -13.02%

-----------------Year-to-date----------------- Sales 128,134 155,553 YOY% -17.63% =================================================================