This is a book stand, which is used to support the book to stand steadily. Made of iron, stainless steel and other materials into the shape of "L", appearing in pairs. The book stand can prevent a row of standing books from tilting and tilting, thus preventing the books from being bent, bent or damaged. Bookstall can also be used to summarize and organize different kinds of books. Libraries often use book stands to sort out the shelves with gaps.