There's quite a high chance that N9 will be put together in Salo, Finland. Like pretty much all of the top end phones... other than N900.
Usually the other plant for high end phones is in China feeding the Asian market.

While the Romania plant is supposedly the most modern one and was in the process couple of years ago to become the largest of the 10 factories they at least used to make only S40 phones. Dunno about now