When asking $120 for a keycap set, I think that the manufacturer information being disclosed is a minimum acceptable standard. We have seen so many issues with new manufacturers over the past couple years that it's hard to trust a group buy that refuses to disclose this information. Doubly so for a set that is full reverse dye sub given the problems that even major manufacturers like ePBT, Keycreative and Infinikey have had with reverse dye sub quality control and lead times.