Enter an 11-digit UPC bar code (or a full 12-digit code including the check digit) and MakeUPC will generate the bar code graphic for you.

输入一个11位数的UPC条码(或一个完整的12位代码，包括校验位)，它为您的图形生成条形码。

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The random 18-digit code plus two check digits will have a four-digit prefix added and it will have intelligence in it.

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