[davidmanze]

That's not the only increase in prices for Chinese companies. In Europe, some Chinese companies opened up warehouses. Other rely massively on (too) lax customs control like in the UK. With Borisi Johnson galopping out of the EU the times of comparatively simple shipments from the UK to the EU are soon to become a thing of the past.

I doubt that Nikon foresaw Trump's action in 2017 - they just could not place enough N1 bodies and lenses in the market. So basically they shut down the Chinese plants because of Nikon's poor marketing and their inability to compete with other brands / better concepts .........
  

                                                            ....... it was a dying model certainly.
   
Maybe they did (or did not see) Trump's action in 2017 even if only in it's "niggling threat form" but not in it's entirety ..... they could have produced other products there ....... whatever, Nikon will not be looking there any further .....