查了一下:
Is this license official ?

問:Hi is this license official?
https://m.mobilmania.cz/limitovana-...-1190/a-1342306
https://www.goodoffer24.com/windows...-32-64-bit.html

答:
Hi,
Microsoft warns at https://www.microsoft.com/en-us/howtotell/Shop....

Beware of Product Keys Sold Separately
With the exception of Product Key Cards (PKC’s) distributed with COA’s, Microsoft does not distribute products keys as standalone products. If you see a listing on an auction site, online classified ad, or other online page advertising product keys for sale, it’s a good indication that the keys are likely stolen or counterfeit. If you were to purchase and use a stolen or counterfeit product key to activate Windows installed on your PC, the key may not work for activation, may already be in use on another PC, or it might be blocked from use later by Microsoft when the key is reported stolen.