The first point: no decompression software is installed.
At present, the test reports downloaded by the paper system are compressed packages, which need to be decompressed by decompression software. If your duplicate inspection report is not opened with word or pdf reader or other software, it will be garbled.
The second point: the browser has not been upgraded.
Many IE browsers in Windows system are outdated and have not been updated in time. Many duplicate checking reports can be opened through a browser. If you don't upgrade, they may not be compatible, and this test report cannot be opened.
The third point: pdf reading plug-in is not installed.
The test report is also a pdf version, which needs to be opened by a pdf reader. If not installed, other software may be garbled when opened.