My guess is that the supposed fake slab (left) was made in the same factory that the legitimate slab (right) was made in.
But while the material may be the same, notice how the “slots” are extra noticeable on the left slab. This was the smoking gun on the fake slabs coming out of China. The backs look very different. If this was the same group out of China, they may have gotten better at addressing the original issue, but have yet to make a perfect label.
An incredibly convincing fake. 
Edit: The QR code looks different from the original copy, but it does lead to the correct webpage.
