Who knows what this is really

The cable is cheap and yes, it works (at least for now).
However, since it has no inscription, it may all be possible. References to standards, quality standards are completely absent. Based on the quality of workmanship I very much doubt that the promised characteristics (CAT 6 S / FTP) are complied with.
I wanted the cable for the connection between two audio components. The existing cable is a bit long and I wanted one in a better length. Brief comparison confirms the concern, what may well be a cable. Sound deteriorates, old cable comes off again.