EU signalling it may not grant 'conformity assessment' rights to UK in the upcoming FTA.
This would make it more expensive and annoying for some UK exports, in a way that even many other EU trading partners don't have to deal with.
"OK we have different rules for products, but we both have good, responsible laboratories/testing centers.
I'll tell you what our rules are and your labs can test. If they say a product meets them, that's good enough for us."
This might be expensive, time consuming or impractical.
Governments will sometimes do a standalone deal called an "MRA" on just these sorts of questions.
Explainer below:
explaintrade.com/articles/2020/…