No. Vivo S1 does not have the USB Type C port but it does have a MicroUSB port. The phone has fast charging support via MicroUSB port charging.
Yes, Vivo S1 does have the Corning Gorilla Glass 5.
Yes, Vivo S1 has dual 4G support. You can use 2 4G network sim cards at the same time.
Yes, Vivo S1 comes with 18W fast charger in the box and the mobile has fast charging support.