Question please!

Hello all! I had a question I wanted to ask. It's been said many times how the hair we buy from Chinese vendors is not Malaysian Mongolian etc., but the question I have is about the hair itself. This virgin hair many vendors market, what processing does it go through? I look at the raw shipments from iv's and I see a noticeable difference from the "Filipino , Brazilian, Peruvian straight". What processing is done to get the hair to look the way it does? Is it still chemical? And what can I do to avoid getting processed hair if this is the case? I recently made an aliecpress purchase on some at first beautiful hair, and have been disappointed by the outcome this past month. I just want to know what I need to do to get some virgin hair that isn't raw, but has gotten done good tender living care lol.