1. Book price: Because of the cost of copyright authorization, the price of genuine books is higher than that of photocopies. 2. Different production forms: genuine books are arranged and printed after authorization; The copy is a complete copy of the original, and the copyright remains the copyright of the original book. 3. Publishing houses are different: after authorization, genuine books can mark their own companies as publishing houses on the book cover; Photocopying can only indicate the book publishing house authorized by audio and video. 4. The classification of books is different: genuine books are generally authorized books with original authors or typesetting; Most of the copies are English books or ancient books, and the copyright of ancient books cannot be obtained from the original author.

Photocopy is an intact copy of the original, and the copyright remains the copyright of the original book. Because local printing can save a lot of money, the price is much cheaper than buying the original book. The reason for using photocopies can be summarized as follows: it is too expensive to buy other people's original books. In order to save money, we completely copied other people's books after obtaining the copyright authorization from others, and marked the copyright as the original publishing house. Most of the photocopies are English books or ancient books.