Refers to goods that are not books. Non-book category is a commodity type, which is used to distinguish it from book category. Non-book category belongs to non-book category and is often used to distinguish goods. UNESCO's definition of a book: all printed materials with more than 49 pages published by a publishing house (enterprise), excluding the front cover and back cover, have a specific title and author's name, and have an international standard book number. A publication that is priced and protected by copyright is called a book. Non-book goods include digital electronics, office supplies, fashion daily necessities, toys, school supplies and so on.