Technical support email

We recently upgraded this English forum added two emails:
Technical support: 
General information: 

You can find this information on the "Contact" page

I'm interesting your board. we find embedded board that has more than GPIO
20 pin and already loaded android OS. And we want 10'' touch panel. I saw
many your product through Aliexpress, board spec is good but touch panel
size is too small. Will you recommand me a good board?
And lastly, Can you provide GPIO porting software or library for android
If we finish development our machine, we have a plan mass production. So I
want your reply. Thank you.