I don't own the OULUOQI Link Bracelet, but their Leather Loop is garbage. The materials are not even anywhere close to the Apple band. It doesn't even feel like leather, but rather like hard, cheap plastic.
Granted, this experience has left me with a bias towards their products, but my opinion on the photos of their Link Bracelet is this: the stainless steel looks pretty good (but still too shiny and cheap compared to the real deal), and the Space Black looks cheap as hell. It doesn't even come close to the classy look of the legit one. And like most knockoffs, there is way too much variation in user photos to know if you're going to get one that's "close enough" or one that's obviously a cheaply made knockoff.
After having ordered a few 3rd party bands on Amazon, I've learned to save my money for the well made ones. Cheap bands just make your expensive watch look cheap. For the amount I've spent on various 3rd party bands, I could have had a legit black Milanese Loop by now...