RE:The process already exist with better grades!!!
This is an article written in a Chemistry and Engineering journal. It isn't an industrial process being put forth by competing company. The research was performed in a University lab (College of Chemistry and Chemical Engineering, Central South University, Changsha, China) on a small scale. The difference here, IMHO, is that AMY is refining a similar (?) process on an industrial scale. ... and has it patented to do so ... in China I might add.