Seeing as the majority of regulated mods are made in China, I see no issue at all. Nearly every mod I own is Chinese made, and I own 49 so far. I do have authentic mech mods made in China, as well as authentics made there too.
I really see no issue with purchasing things that are made in China. Resellers in the UK or USA could be blamed if they sell dangerous items, but I feel it is on them to check an item, after all if I can do it, surely a retailer can. A £20 clone is just as likely to go wrong in the wrong hands as a £300 authentic mech.
Big tobacco hates vaping full stop. Wether it is China, USA, or Mars made makes no difference.