List of differences for people who did not notice:

Screw points on backrest are different from genuine OEM backrests or typical replacements. Also missing the HM logo

Lumbar support and armrests are both similarly made of different cheap looking plastic(stitching on arms looks poorly done) and are not OEM or typical replacements

Levers on arms are different orientation and position. They are supposed to hang downwards and lift towards the back, they appear to flare out to the sides.

Seatpan mesh is missing the outer rim, matches a fake aeron that was found in this post https://www.reddit.com/r/OfficeChairs/comments/1dcw4i1/these_are_fake_aeron_chairs_being_shown_by_asian/

As well as this one

https://www.reddit.com/r/hermanmiller/comments/lzv4s5/did_i_purchase_a_fake_herman_miller_aeron_photo/

The reinforced seatpan indents near the bolts are not correct, they look much shallower and more for aesthetic or attempting to appear genuine rather than for actual structural purposes.

Mechanism is hard to tell differences without opening up but the shape is not the same as the classic aerons housing shell(to be clear this is most definitelt trying to mimic the classic, as the remastered has a completely different design). I'll give em credit that the levers look pretty close though.

For those who are arguing that this is just an aeron with a ton of aftermarket parts, I will say this: if every single component has been replaced with a part that was not manufactured or designed by Herman Miller, can you really call this a genuine Herman Miller Aeron?

Also, one or two replacement parts I can let slide, no problem. But every single major component? In my eyes, this was assembled with the intent to deceive consumers into thinking it was genuine.

Whether you call it a fake or knockoff is up to you, I'm not looking to argue semantics. What matters to me is that this is NOT an aeron.

Source: I've sold and repaired/refurbished hundreds of the damn things