Planta has made a few blends under license from Germains for years. I believe they have rights to distribute others in Germany, perhaps elsewhere. The link does not work for me, but I have seen versions of their catalog that, if you blow up the illustrations, can be made large enough to show the country of origin. That is accurate. And to confuse matters, I believe Mixture No. 7, which in my opinion shouldn't be made anywhere, has been made in both Germany and the Jersey Islands.
The more interesting question to me is how much, if any, leaf each might process for the other.