Did you just download a file that has a digital signature from Cheng Du YunDuan Network Tech.,Ltd and wonder if the file is safe? If that's the case, please read on.
You will typically notice Cheng Du YunDuan Network Tech.,Ltd when clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screencap shows:

You can view the digital signature details for Cheng Du YunDuan Network Tech.,Ltd with the following procedure:
Here is a screenshot of a file that has been digitally signed by Cheng Du YunDuan Network Tech.,Ltd:

As you can see in the screengrab above, Windows states that "This digital signature is OK". This implies that the file has been published by Cheng Du YunDuan Network Tech.,Ltd and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can view all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, and so on. You can also see the address for Cheng Du YunDuan Network Tech.,Ltd, such as the street name, city and country.
GlobalSign ObjectSign CA has issued the Cheng Du YunDuan Network Tech.,Ltd certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the Cheng Du YunDuan Network Tech.,Ltd files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/47 | longradrv.sys |
The detection percentage is based on that I have gathered 47 scan results for the Cheng Du YunDuan Network Tech.,Ltd files. 0 of these scan reports came up with some sort of detection. If you like, you can view the full details of the scan results by examining the files listed above.
The analysis is done on certificates with the following serial numbers: