Connection Spesific DNS Suffix

I bought a small computer called MINISFORUM and solved the initial problem with the keyboard. And now I am ready to use it! But as a nature of engineers (:-), I want to check various things before using it in earnest. This time, I also casually tapped ipconfig and found an unfamiliar domain name in the connection-specific DNS suffix field !?

I am not prejudiced against the country of origin of personal computers, but when I saw this, I was a bit scared (:-). Could it be spyware? Is there spyware in it?　I searched every file and registry and tried to check for viruses, but there was nothing that looked like that.
In conclusion, and this is a bit of a guess, but it seems that if you just remove the DNS suffix in the network settings, ipconfig will show the previous configuration values. So perhaps, but the configuration values from the computer assembly and testing process were still there. As proof of this, when I (fearfully) connected the computer to the network, this value disappeared.
I don't store any important information on my computer that could be stolen (really? :-), so I don't really care. , so I am not too concerned about it, but I wonder if it would be a big problem for companies that handle critical information. I am worried about that. I wish they would erase such information properly (lol).