The EU did nothing like that - it's quite simply a lie you are proclaiming here, and once again, the EU only does what the member states agree upon. China was for decades an important export market so chinese imports were accepted as a part of the deal by majority of the EU countries (otherwise they would simply change the rules). Now the tide is turning, many European imports are not needed anymore in China and so it is to be expected that chinese imports will be less welcome here. You may or may not agree with this politics, but there is no sinister conspiracy you are implying.

But all of this is still very much off topic in this discussion about the illegality of some imports (because that's a completely different issue than trade barriers and tariffs). And since you seem to claim (hard to tell really since we are veering offtopic all time) that the members states were powerless to act against those imports, I remember that even back in 2014 in our paltry Slovakia I had to personally visit our "Regional Public Health Office" and sign a form that the tea I imported from Yunnansourcing (less than 2kg in total) really is just for my personal consumption, otherwise they wouldn't let me have it or I would have to pay for maximum residue limits testing. And of course that was after I already paid the import duties. So when this much attention was possible in Slovakia for a small amount of tea, why wasn't it possible for any random package from China everywhere else? Because many countries simply decided they don't care although health and security is still their responsibility.