Sorry, don't know and have googled on it too... Send them a mail to find out if you will...
On another note, I just recieved from the states some palm VG from nicotine-river(same as from liquid-barn, manufactured by musim-mas in indonisia), and it's really good. It's either my number 1 or 2 of all i've tested(10'ish), aren't really sure(i'm guessing both my fave's are palm, I only know one is, for sure though). Some really great dark depth in the sweetness of something I cannot describe fully, but will be able to detect for sure later on in a blind-test... A little bit like coconut, but not quite, but really nice unflavored. Kinda like forrest-honey with it's dark aroma, but of course very suddle and not main note, but backnote.
Also, the german-made VG I had before and thought was palm, because it tasted like violets, I can now see probably isn't, because this palm VG has nothing about violets over it at all.
Granted it's the only US VG i've tested, so I can't really say if ED's palm VG isn't also just as good(?), could very well be, but for certain the VG made by musim-mas(99.9% glycerol) is crazy good!