1. Coil binding: punch holes in the inner pages of the cowhide notebook, and then bind the inner pages together with plastic or metal coils. The advantage of coil binding is that it is easy to read, can be turned over 360 degrees freely, and is not easy to be damaged, but the coil will affect the flatness when writing.
2. Hot glue binding: punch holes in the inner pages of the cowhide notebook, and then stick the inner pages together with hot glue. The advantage of hot glue binding is that it is beautiful and flat, and it will not be affected by binding when writing, but it is inconvenient to read, and once it is bound, it is impossible to change or add the inner pages.