Whether it will be possible to import export data from SQL
Sure. Take a look at very basic file in the fuel.io/faq section (CSV).
You can create CSV file to import it.
If you need more complete CSV you can add something to the app and do export. YOu'll see all paramaters. But the file in FAQ is the basic one.
Сервис поддержки клиентов работает на платформе UserEcho