Auto copy cell information from one sheet to another sheet

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Hi

can you please help to write VBA that could copy one cell information to another

Excel file is attached if I type tab Cheque refund infor sheet coloum A2 with X. then can copy D2, G2, H2 I2, J2 K2 information to Tab Customer Letter. and If I use A3 with X, then can copy D3,G3......


https://app.box.com/s/oalvsikrwoxhwj6wmb9j


thanks