q2 visa renewal

Good day!

I am holding a Q2 visa and the automatic extension will be expiring middle of next month. I would like to ask if there is anybody done with their Q2 visa renewal after availing automatic extension, if there is please be kind to share the information about the procedure and document needed for the said renewal.

I also availed an extension here in China last February for 90 days and before this extension be expired we went to the Bureau but they said I am still entitled for the automatic extension(60days) but I am worried about if how I am can still extend my q2 visa.

Thank you