Did you just run into a file that has a digital signature from Nantong Zirui Information Technology Co.,Ltd.? If so, please read on.
You'll probably see Nantong Zirui Information Technology Co.,Ltd. when running the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screengrab shows:

You can view the digital signature details for Nantong Zirui Information Technology Co.,Ltd. with the following procedure:
Here's a screenshot of a file that has been digitally signed by Nantong Zirui Information Technology Co.,Ltd.:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This implies that the file has been published by Nantong Zirui Information Technology Co.,Ltd. and that no one has tampered with the file.
If you click the View Certificate button shown in the screenshot above, you can examine all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also view the address for Nantong Zirui Information Technology Co.,Ltd., such as the street name, city and country.
COMODO RSA Code Signing CA has issued the Nantong Zirui Information Technology Co.,Ltd. certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Nantong Zirui Information Technology Co.,Ltd. files I've gathered, thanks to the FreeFixer users.Unfortunately I don't have any scan result from VirusTotal available for the Nantong Zirui Information Technology Co.,Ltd. files at the moment. The scan results will appear here as soon as a FreeFixer user uploads a file digitally signed by Nantong Zirui Information Technology Co.,Ltd..
| Detection Ratio | File Name |
|---|---|
| Not available | FFPlaySetup.exe |
The analysis is done on certificates with the following serial numbers: