PDF is preferred. Also accept AI, CDR, INDD, PSD, TIFF files.
Please pay attention to the following points about your document.
1. Please convert the text into paths or curves.
2. Please confirm all the folders especially the graphic ones included in your document in case of images unable to display or with low resolution. Therefore, make sure that necessary images with high resolution (300dpi) are in the document.
3. Convert the color of the linked pictures from RGB to CMYK.
4. Check the accuracy of the color when pantone spot colors are converted to CMYK. Slight differences generally exist after the operation.
5. Please clearly specify the accurate size of the files, including the 3 mm bleeding.