Book restoration refers to the restoration and mounting of damaged books, so that they can be restored to their original state and put into use in libraries or public places. Repairing books helps to save resources and reduce expenses in libraries or other places. In addition, through mending, we can protect the library's collections, increase the life of the inventory, and make them more durable and easy to use.

The importance of book revision is self-evident, especially for important historical documents and cultural heritage. Many libraries and museums have targeted restoration programs, and professional technicians repair books through unique techniques and methods. Restoration can not only prolong the service life of books, but also protect their value, which is of great significance for inheriting culture and protecting historical heritage.

There are many tools and skills to repair books, most of which require manual skills to operate. For example, you need to clean the folded pages with alcohol, and fill in the missing places with mending paper fibers or patches. In order to make the repaired books more durable, modern tools such as phenolic ketone resin and plasma gas treatment can be used to make the book surface smoother and more readable.