The TIB is Germany's National Library for all areas of engineering as well as architecture, chemistry, information technology, mathematics and physics. With its unique paper and digital collection of fundamental and highly specialised literature on science and technology, it is the world's largest library of its kind.Offering an attractive range of services to both science and industry, TIB - founded in 1959 - represents a major element of the national information and research infrastructure. For example, TIB's specialist portal combines leading scientific and technical databases, publishers' services and library catalogues. Key elements of the collection include conference and research reports, patent specifications, standards and dissertations, as well as specialist East European and East Asian literature. In addition, knowledge objects such as research data, AV media and 3D models can also be researched and supplied.The importance of the above-mentioned non-textual objects is growing immensely in the fields of research and teaching. TIB is managing to stay abreast of these changes by establishing and expanding a Competence Centre for Non-Textual Materials - with the aim of improving the conditions for accessing and using AV media.TIB has been a DOI registration agency for research data since 2005. By assigning DOI names and ensuring their detection and access via the TIB portal, the library safeguards not only the quality of research data, but also their long-term availability and referencing capability.