Saddle Stitching Book printing usually refer to “iron wire flat nails”, and they do not use pre-made staples. During the production process, the machine cuts a section from the coiled metal wire, nails it into the paper, and Bend the iron wire on the other side of the paper and fix it, The contents of the book and periodicals are not pre-ordered to be combined into the book core, or the cover is attached and then the entire book and periodicals are bound together and cut together. The book is finished with saddle-stitched books. The front cover and bottom seal are exactly the same size and neat as the page of the book core, while the spine is narrow and arc-shaped, and the iron wire used for the book is obviously exposed, so Cannot print text.