Superstar Digital Library (SDL), founded in 1993, is the most professional and comprehensive solution/resource providers for digital libraries worldwide. SDL has an impressive infrastructure of over 3500 employees and more than 20 widely distributed digital factories. Through devotion to research and development in digital publishing technologies since its outset, SDL has been recognized as a brand leader in the digital library world. It leads the way in the process of library digitization, relying on abundant publishing resources and constantly emerging publishing technologies.