are you sure 质保也会自动转给新主人。
I checked the YAMAHA warranty ,
http://usa.yamaha.com/support/warranty/pianos/images/070109_Acoustic_Piano_Warranty.pdf
it says:
( 1st pharagraph:
... specially authorized
dealers and is pleased to offer you,
the Original Owner, the following Limited
Warranty,....
)
( 2nd paragraph:
COVERAGEL
...
Any evidence of alteration, erasing or forgery of proof-of-purchase
documents will cause this warranty to be void. T
his warranty covers only the Original Owner and is not transferable.
)