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Since the placemark did not fit with any existing building - I even suspected the small building which turned out to be the district library - one of the photo albums on the website (even more strangely, the album is still online) gave me the clue that it must be a recently built office. The satellite image dates from 2006, and the photos showing some finishing touches on the outside of the building are from November 2008. But only after I recognized the library building in one of the photos I knew for sure the placemark in Longdo was correct.
PointAsia has slightly more up to date imaginary, since there it shows the office building with roof already, but none of the surrounding auxiliary buildings like the garage for the fire truck.