We have received a lot of right documents which scanned in a wrong way.
In order to save your time in getting the proper scanned copy of required documents for China police check / No Criminal Record, we have the following suggestions for you:
1. Use scanner or All-in-one printer.
2. Choose "Document", instead of "Photo" at the Scan Utility interface.
3. Do not use smartphone camera and APP such as CamScanner.
4. Do not insert photo into PDF by Adobe PDF Editor.
! check the required documents here http://www.chinapolicecheck.com/how-to/216-required-documents.html#PCCdocs