They've been making them in Indonesia for the past couple years AFAIK
Yes, that's where they originally all were made... then a big announcement about how they were expanding to a plant in China too, which was also going to be proprietary/owned also, and that we should not worry about quality control there... then some WERE made there....
But --- the reponse @GeorgeBassPlay got (and which I quoted) says the make ALL their instruments in Indonesia... meaning they have shuttered the Chinese plant they'd only recently (well, a year or two) starting producing some Sires in? There weren't that many Chinese Sires in the US, but I think many Thomann Sires are/were, at least in the past at some point.