serial number and record

[tomer6382]

the company of my piano is "CHOET" in russian. in english i think that is "sonat".
i have the serial number. i want to know how old my piano. please give me a link.

hear is a record of my piano?
how is the sound? shuld i need to turn the piano? there is any problem with the sound of the piano?

the record is stereo by 2 mic'.

https://stage.co.il/media/tomerflysher415165.mp3

thanks!!