The current issues of some important journals have not been included in any database yet, so the library orders them separately and are listed here. For example, the top mathematics journal Annals of mathematics (Annual journal of Mathematics), where Zhang Yitang's paper bounded distance between primes were published. Some of the paper periodicals ordered by the library are also listed here with access to their electronic periodicals. 

Duxiu Academic search is a knowledge search and literature delivery system, providing users with in-depth literature search including metadata search, bibliographic search and full-text search, and providing partial literature delivery service within the scope of copyright for the search results.  The retrieval system of Duxiu is a three-dimensional and in-depth retrieval system, which provides three retrieval channels of bibliography, chapter and full text, and realizes the vertical search of catalog and full text, so that readers can obtain in-depth, accurate and comprehensive information of literature resources in the shortest time. Duxiu book retrieval system can not only display the detailed information of the book, but also provide the original text of the book display, so that readers can clearly judge whether they need the book, and improve the information accuracy rate and the efficiency of readers’ book search and borrowing. 

Iresearch e-book aims to gather the high-quality e-book resources of the world's leading presses and provide one-stop academic research reference services. At present, the platform has reached cooperation agreements with more than 40 international well-known publishing institutions such as Oxford, Cambridge, Brill and John Benjamins. As of April 2020, Iresearch has launched 180797 kinds of e-books, covering humanities and social sciences, science and technology, medicine and other disciplines. 

Wiley E-text features a selection of Wiley's internationally renowned original textbooks for readers to teach, study and refer to more conveniently and quickly through online reading and downloading. These publications are written by internationally renowned authors and scholars and have been designated as teaching reference books by several top-tier internationally renowned institutions, including MIT, Columbia University, Yale University, Harvard University, Princeton University, Cambridge University, etc.  

Founded in 1807, Wiley Press is one of the oldest and best-known publishers in the world. Wiley is one of the world's top three academic publishers and the world's largest publisher of academic associations, working with more than 900 academic associations each year. Since 1901 to the present day, Wiley has published the works of more than 460 Nobel Prize winners. More than 1,600 academic journals are included on the Wiley Online Library platform, including more than 1,200 on the Web of Science, covering almost all disciplines, including the humanities and social sciences, natural sciences, and health sciences. The library ordered all of Wiley's current issues. NSTL purchased Wiley Press's Backtracking Journal Database (927 academic journals, back in 1997 to its founding year) to provide services to domestic institutional users under national license, see "Notice of NSTL's opening of Wiley Backtracking Journal Database for the whole country". The library also purchased some Wiley reference books.  

The Web of Science database contains more than 12000 authoritative and influential academic journals in the world which can be traced back to 1900 and covering natural science, engineering, biomedical science, social science, art and humanities, etc. The core collection of Web of Science contains references cited in papers and makes a unique citation index according to the cited author, origin and publishing age.  

Springer-Verlag is a leading technology publishing group in the world, providing its academic journals and electronic books online through Springer Link platform. The following items ordered by the library are available on the Springer Link search platform:  1. Journals  2. Adis Pharmaceutical Journal  3. Kluwer journals  4. RLoS Journal (Online Journal of Russian Science)  5. e-books  In addition to the above, the library has ordered the following:  1.Springer Materials  2.Springer Protocols 

Scopus is a daily updated database of peer-reviewed abstracts-indexed academic papers from all disciplines (more comprehensively included in the fields of medicine, social sciences and Life Sciences). The bibliographic index covers journal articles, conference papers, books, and patents. Citations in 2016 date back to 1970. 

SciFinder is produced by the Chemical Abstracts Service (CAS) under the American Chemical Society (ACS). When CAS was founded in 1907, the product was the paper "Chemical Abstracts". In 1995, it began to provide scientific researchers with an online access database platform: SciFinder. In terms of content, in addition to the complete coverage of all paper "Chemical Abstracts", SciFinder also includes substance databases, chemical reaction databases, chemical online, and compound compliance control information. In terms of function, SciFinder provides multiple retrieval methods and multiple post-processing functions. 

PubMed is a web-based medical literature search system developed by the National Center for Biotechnology Information of the U.S. National Library of Medicine. With powerful search and linking capabilities, PubMed is the world's most utilized free online database for finding medical literature. It contains abstracts and partial full texts of more than 4,600 important biomedical journals from over 70 countries and regions around the world, of which more than 80% have English abstracts or links to full text, and about 5% can be viewed for free. PubMed includes MEDLINE, PREMEDLINE and literature databases provided directly by publishers. The records in the PREMEDLINE database are marked with "PubMed-in process", which is a database composed of literature records that are being processed; the literature records provided directly by the publisher are marked with "PubMed-as Supplied by Publisher", and they transmitte records to PREMEDLINE every day. Once included in PreMEDLINE, they will be marked as "PubMed-in process" and transferred to MEDLINE after being indexed.