Yes, all 4K discs are region free and should be playable in any 4K-capable player, regardless of where in the world the player was made. So, if you want to import a movie and it is on a 4K UHD disc, then you don't have to worry about it being region locked. Keep in mind though, if that imported 4K disc also comes with a regular Blu-ray disc, then the Blu-ray disc might not be playable for you if it has a region code that is not compatible with your player.