I'm usually against tariffs but in this case it seems like a pretty fair tit for tat to China basically removing the budgetary concerns for their manufacturers that said manufacturer's international counterparts won't have.
Subsidizing local production for local markets is fine enough, but exporting products made with an infinite money glitch active is more or less an intentional play at market capture.
And before some sinoboo tries to gatcha me I do also object to examples where the west subsidizes domestic production for international markets.