In other words, you don't actually know anything about this particular brand.I have bought super cheap 1st stages and found metal chips from machining inside them. I have bought cheap bottom-of-the-barrel reg hoses and had them fail catastrophically within weeks, or degrade quickly while quality rubber hoses last years. As far as I know, things still haven't "changed" for the uyghurs and dissidents disappeared to labor in the factories of that country of origin.
To be clear, I don't either. Which is why I said "If it tests OK on the surface, it should work fine. Even if it fails completely, you'll only be 6m deep."