Hi nquery,Hi nquery,
Thanks for all the efforts. To me the reply from Rachel raises more questions than provides answers.
Sounds very unlikely that suddenly Linlai offers twice as many product variations as originally. Essentially each Linlai tube comes with Linlai Global logo version as well. Time will tell - maybe someone will do direct comparison of Chinese and Global versions.
I have checked on aliexpress and it is difficult to judge whether I am buying directly from Linlai or not (it seems to be Linlai but who knows). One thing is for sure that spec sheets that I have received for my DG805 are from the same date as my order date. So if this is a dealer I am buying from, he must be close to the factory.
I have asked hifi-amplifiers and they have responded that the tubes are identical i.e. Linlai and Linlai Global.
Same response from aliexpress linlaitube store.
Don't know how much it is worth what they write, but likely Global is just a marketing rather than different tubes.