I often buy in China. electronics, motorbike parts, race parts and 3D printer parts and had very few VAT or Customs. but I dont want to heat about Fedex DHL or UPS they always overcharge and add some crazy costs.
0.2 nozzle may be interesting but you will have lot of problem of clogging. the dust on the filament will become a reall issue.
Mechanical shutter is a very good thing. I think about it often. ‘having a nozzle with constant pressure and mechanical shutter’ … (needle valve)
I will keep you informed as soon as I get the parts. It will be around the end of the month.
Maybe other persons will be interested.