Yes Wan Wei is a brand successfully registered by Shaanxi Wan Wei Education Book Co., Ltd. on September 2, 200717. Wan Wei's books have packaging molds. That film is a book published with plastic film, and there will be a layer outside, which is to prevent dust and protect the book to some extent. Plastic film is also to prevent it from being opened by others in the process, and the damage is also to protect the interests and safety of buyers and sellers.