I would do the same as you was adviced last year in https://www.cnet.com/forums/discussions/what-should-i-do-if-the-prestigio-laptop-keyboard-fails/
In your posts I see a lot of questions on parts of different laptops. And some are (for us) obscure Chinese (or so) makers. I assume you are from such a country also and specialise in repairing laptops. Then you really should know how to find parts and not ask in a consumer oriented forum like this.
Hello everyone,
I am looking for a prestigio smartbook 116c US keyboard. I saw RUs on the Internet, but there is no US. I need your help. Thank you.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic