I live in Sweden, so I assumed Finland had it similar. Here, parents are not always offered to know the sex. This is sometimes because of hospital policy, or because the ultrasound did not make it clear enough.

Thanks for giving a definitive answer.

Why would there be a hospital policy against gender disclosure?

To prevent parents from aborting children of the "wrong" gender. It has sadly happened, apparently.

By the time you can tell, you can't have a legal abortion. Black market ultrasound is probably not the limiting factor in illegal abortions in Sweden or Finland.

They can't really tell with 100 % accuracy until birth, but by week 18 they can tell with a very high level of accuracy. And Sweden permits abortions until the end of week 18.

Im not sure. The best indication I can find is that such identification is seen as unnecessary from a medical viewpoint. Doing a quick search, the only other information I could find on the matter is that not identifying the sex is viewed as standard practice.

In China there is.