DGR Library creates enterprise digital management apps. Users can store and sort books for easy use, such as books; magazine; newspaper; Photo album and catalog Users are able to choose from a variety of display formats, such as cover display, ridge display. And detailed display For easy selection of books, the program has a function to search for book titles, author names and publisher names. The form of reading is like turning the pages of a real book. Users can zoom in and out of content.