Don't know about Vietnamese laws, nor your local laws, but "made in Britain" can be put together in Britain. There's a good chance it's still relying on chips and circuits made in China?

China has never been the only place to manufacture tech ever South Korea, Japan, even Germany/France/USA for us in the UK (LG has grown phenomenally well the last couple of years, Japan in the 80s-90s was the place for UK electronics).

But China seems to have been the principal place for affordable consumer electronics [chips/circuits] for at least the last decade.