Doesn’t say anything about the method. Or even if it is really ethanol (the China aspect leads me to think it is a different chemical)>
If it is what I am thinking of, it uses ethane as a feed stock with modification and a catalyst. So you have a two Carbon group, but not ethanol (alcohol)
Which we used to do here, till the refineries realized it was getting into the ground water and making the wells smell like dead fish.