I checked mine, which is a fairly basic model, and it’s actually 400V.

And no one should be buying slow cables that they’re likely to trash anyway once they figure out their limitations…

This is just some marketing bullshit.
There is nothing I can see about these cables that’s in any way more repairable than any other cheap USB cable.

They are also USB 2.0 without an e-marker chip, so their claims about “high speed” data transfer and “100W” charging speeds are dubious at best.