THIS LETTER IS WRITING TO CERTIFY AA (MALE, DATE OF BIRTH:APRIL 17,1991) WORKED AS ASSITANT FOR THE FINANCIAL STATISTICS DEPARTMENT FROM JULY TO AUGUST,2013. HE WAS IN CHARGE OF STATISTICS ON SALES FIGURE AND PREPARATION THE STATEMENT, AND MAKE ANALYSIS. HE GAVE CONSTRUCTIVE ADVICE TO COMPANY, AND PERFORMED OUTSTANDINGLY DURING THIS PERIOD.求采纳为满意回答。