What items do not need to be removed from the original binding?

There is no need to remove the original binding item, as follows:

1, the original binding is closely related to the contents of the document, inseparable, and closely related to the documents and documents in the library.

2. Original binding has special historical, cultural or aesthetic value, such as ancient books and precious manuscripts.

3. The original binder will not damage or affect the contents of the document during the use of the document, such as some simple binders and paper clips.