In our printing house, printing artworks are expected to be submitted in printing PDF/X-1a file format. When the file is saved after designing, it is not enough to save it as a simple PDF file. The file should be a PDF for printing. So, in the case of a print file, select PDF/X-1a:2003. Why is a printing PDF necessary? Why is it not enough to choose the “simple” PDF format? Due to the wide
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