N.Ireland’s largest manufacturing employer is Canadian Company Bombardier, based in Montreal - they make aircraft parts here.
From EU Commission site:
CETA is a new trade agreement between the EU and Canada.
It cuts tariffs and makes it easier to export goods and services, benefitting people and businesses in both the EU and Canada.
That company announced this week that they have put their NI business up for sale, that will mean no UK presence for Bombardier.
From NY Times on Feb 18 this year:
Honda Confirms Plan to Leave Britain as Brexit Looms
From the Manchester Evening News on Feb 5th this year:
Car giant Nissan has announced that it has scrapped plans to make its new diesel X-Trail model in Sunderland.
Production will instead be switched to Japan, in a move that many people think has been driven by the prospect of Brexit.
By coincidence the new EU_Japan trade deal was announced this year.
The thing is Liam Fox (UK Trade minister) announced that making trade deals is easy peasy, - but the only one made so far is with CHF and it is pretty rubbish.