Mignon Chinese pianos?

[Robin Stevens]

Hi List.
I am trying to gather information on a Chinese piano called
"Mignon".Although I think it might be only a trade name from one of the
Chinese manufacturers.
This pianos Keyboard is starting to go on the move ...I.E. Keys twisting and
changing shape.
The action regulation, Key heights are changing.Tuning stability is also
very poor.
My question is do you have the "Mignon" Piano in America and if so could you
let me know of your experiences with this Brand.
Many thanks
Robin (Aussie)