We are allowed to integrated with Google rating for importing reviews/ratings to your store same as AliExpress procedures.
For Google rating to be added, you can simply follow this step for product by product:
Ali Reviews > General Setting > Import Reviews > Click on product which you want to get Google ratings > Click on "Add Google rating" button:
After all, you should test that everything’s working on your store by using Google’s Rich Snippet Tool (or Structured Data Testing Tool).
About microdata, we are sorry to say that we cannot help since it does not relate to our app, but you can ask your developer or check this link for more details.
I hope this might be helpful for you.
If you need some more helps, please feel free to contact us via live chat or email us at email@example.com