Exactly - and, as I said, the same usually/often applies to 'retailers' as well as consumers (end-users). It seems obvious to me that its the manufacturers (or importers) who need to be 'policed' - since retailers and end-users alike will often have no choice but to 'trust' what they are being sold (and assume that any applicable regulations have been 'enforced').Lets take an analogy. To many people, tyres are expensive round black things<period>. For a given size, there is usually a selection of makes/models/prices. Only a few experts would be able to look at the cheap option and work out if it's OK, or if it's likely to blow out if they do 70 on the motorway. So we have to expect that any tyre on sale is safe, and that the supply chain is policed at least enough that we can be reasonably confident of that.
Kind Regards, John