For a standard bar code symbol the dimensions of the original film, wide tolerance value is 0.005 mm, bar code character of tolerance is 10.013 mm, Business card printing and membership card making enterprise cannot be any zoom in and out some of the original film, bar code marks and publishing house collers thingswithin bar code on the cover, it is best not to copy, you can directly use bar codes in the original film spell collers cover, trademark decoration products tried not to direct photograghic not copies, can be reduced by tailor-in, copy the error in the process, make sure that the precision of a bar code.

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