I wonder if the Curl has a rear shock. Apparently the Curl has jettisoned the front luggage block to get a narrower fold. To me that is unfortunate, but it does have a narrower fold. I like the rear derailleur. I like the design of the rear rack and taking the second pair of easy wheels off of the main frame. Not shown in the photo, the front fork is one sided, again I assume it to be for narrowing the fold.
I am all for the clones. Bring in the clones. I am skeptical of copies if they have nothing more to offer than price, though that is not a bad thing. While searching for 20-inch trifolds, I saw
this. While I would not buy the whole bike, if I could buy the rear wheel with cassette, derailleur and shifter, I might do that and put it on my B