

go to http://www.barcoding.com/upc/ and write a-121 and copy it, paste it into Microsoft Word. double click it and you will saw a bar write size, beside size there was a place you can click. click it and untick the lock aspect ratio. and from the left side, you press the percentage to 67% and the right side will be 73% and the bar code is done and you can print it out
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