A second hand book that in good condition, strong spine, may show early sign of discoloration, minimal foxing, minimal creasing, minimal notation and highlighting.
A well used copy with reasonable sign of wear, significant crease on spine, light to medium tanning and foxing on pages, but does not interfere readability. May include written notations and highlighting but not excessive.
A heavily used copy with significant wear, medium to heavy tanning and foxing on pages, but does not interfere readability. May include considerable written notations and highlighting. May have some warping, water damage or binding damage.
Prepare alcohol, a cloth, and sandpaper for the refurbishment work.
Start by sanding off the yellowed parts on the edges of the book (Only applicable to Chinese books at the moment).
Next, clean and disinfect the book cover by using alcohol.
Lastly, place the book in a disinfection cabinet for overall disinfection process.