I got Shenray clone of this, it was like 12$ so I had to try...
Not really bad, but not very impressed by it.
Tightest draw is a LOT looser than 1mm, don't really know why. Taste is ok. Lots of turning parts and you seem to turn anything but that thing you intented to turn.
Super easy to build, holds 4ml, wicks ok too. I have to play around with this more, but not likely to be in a daily use.