What are Jiusheng's EVO skeleton features?

[Scatterling]

Various manufacturers have been marketing their respective new-and-improved skeletons under the term "EVO skeleton", and Jiusheng is no exception.
However, there's no general definition what "EVO" actually entails, and for Jiusheng specifically, my search of finding out has come up empty.

So, what features does Jiusheng's EVO skeleton (which is nowadays offered as default) have?
I'm thinking double-jointed knees and elbows, shrugging shoulders... anything else?
Can anyone provide a comprehensive overview?

[Hot doll reviews]

I have found believe it or not the older skeletons are best. I have had evo, gear and the old style everybody once had. If I could customize my skeleton I would go with the old joints every where except elbow joints there’s where the gear joint would be best in my opinion, also I’m not a surging shoulder guy.

[jiusheng-doll]

Maybe this picture can help you understand better.

[Hot doll reviews]

Maybe this picture can help you understand better.

I have this girl and she is such a doll! Thanks for making her for me excellent job!

[MannyCan]

I am very happy to see that Jiusheng is placing time an effort into the skeleton!
I me, beauty is skin deep.
Its also what's INSIDE that counts!