Elsevier ScienceDirect Database (SD, formerly known as Elsevier Science) is one of the world famous full-text scientific literature databases produced by Elsevier Publishing Group in the Netherlands. Resources on the ScienceDirect platform are divided into four major subject areas: Natural Sciences and Engineering, Life Sciences, Medical/health Sciences, Social Sciences and Humanities. Including chemical engineering, chemistry, computer science, earth and planetary science, engineering, energy, materials science, mathematics, science and astronomy, agriculture and biology, biochemistry, genetics and molecular biology, environmental science, immunology and microscopic study, neuroscience, and oral medicine, nursing and health, pharmacology, toxicology and pharmacology, veterinary science, arts and humanities, business, management and accounting, decision sciences, economics, econometrics and finance, psychology, social sciences, etc. In a simple and intuitive interface, researchers can browse the full text of more than 14 million articles in more than 2,500 peer-reviewed journals, dating back to 1823. 

EBSCO was founded in 1944 and has a history of more than seven decades. EBSCO is not only the largest integrated database publisher and journal agent in Asia, but also in the world. It provides international online ordering services and is a technology pioneer among its integrated database peers. EBSCO One-Stop Search provides readers with a convenient one-stop service, through which readers can access all the resources on the EBSCO Ehost platform ordered by the library. The literature covers all disciplines such as science, engineering, agriculture, medicine, astronomy, geography, biology, and economics. ​

The China Economic and Social Big Data Research Platform was originally the China Economic and Social Development Statistical Database. It is a large-scale statistical data database that integrates the functions of statistical data resource integration, data in-depth mining and analysis, and multi-dimensional statistical index quick retrieval. Literature resources cover 32 fields / industries of Chinese economic and social development, including all statistical yearbooks and various statistical data (census data, survey data, compilation of historical statistical data, etc.) at the central, provincial and major prefectural and municipal levels. It also published 6700 progress indicators of the latest economic operation data and 28000 industry operation indicators of the national economy of the National Bureau of Statistics and various ministries and commissions.  

CNKI stands for National Knowledge Infrastructure. CNKI project was initiated by Tsinghua University and Tsinghua Tong fang, which was established in June 1999. Multiple databases can be retrieved on the CNKI retrieval platform, such as journal papers, doctoral theses, conference papers, newspapers, yearbooks, encyclopedias, patents, standards, etc., but only the databases ordered by the following libraries can download the full text, and the rest can only browse the abstract information:

Bureau van Dijk Editions Electroniques SA (BvD) is a well-known European electronic provider of global financial and corporate credit analysis databases. BvD provides professional data on international financial and national macroeconomic trends for government financial regulators, banks and financial institutions, securities investment companies, etc. At the same time, BvD is also Europe's largest provider of corporate credit analysis data, with more than 10 million enterprise credit analysis libraries and global mergers and acquisitions analysis libraries in Europe,   which widely for Europe and the United States and other countries of the financial and educational institutions long-term subscription use. 

American Society for Testing and Materials, established in 1898, is one of the biggest and eldest non-profit standards developing organizations. Its mission is to develop traits and performance standards, testing methods and procedure standards in the fields of materials, products, systems, and service. It also promotes the development and popularization of relevant knowledge. 

ASME (American Society of Mechanical Engineers) was founded in 1880 and now is an international non-profit organization of educational and technical with more than 125,000 members worldwide. ASME is one of the largest technical publishing organizations in the world, holding about 30 major technical conferences and 200 professional development courses each year, developing a wide range of industrial and manufacturing industry standards. ASME now has 600 standards and codes for industrial and manufacturing industries, which are adopted in more than 90 countries around the world. 

American Society of Civil Engineers was founded in 1852, a national specialized engineer society with the longest history. Now, as a global leader in the field of civil engineering, the service has covered 130 thousand specialists from 159 countries. In order to encourage information exchange, ASCE has established partnership with 65 civil engineering societies of other countries. 

American Chemical Society (ACS) was founded in 1876. As a world-renowned science and technology publishing organization, ACS has been committed to providing high-quality journals for global research institutions, companies and individuals, covering more than 20 major chemical research fields, including medicinal chemistry, chemical engineering, materials science, environmental science, Thermochemistry, etc., was rated as "the most cited journal in the field of chemistry" by the Journal Citation Report (JCR).  ACS journals can be retrieved from electronic journals from 1879 to the present, almost from the inaugural issue of each journal to the present. In 2015, the number of ACS journals will reach 46, and about 1 million articles and nearly 4 million pages of chemical literature can be viewed, including papers, investigation reports, reviews, etc.; in 2015, ACS journals launched  new journals "ACS Infectious Diseases" , "ACS Biomaterials Science & Engineering" and the first all-OA interdisciplinary journal "ACS Central Science" (no publication fee is charged to the author). 

Founded in 1947, ACM (Association for Computing Machinery) is the world's oldest and largest computer education and scientific research institution. ACM currently provides services in more than 100 countries and has more than 90,000 members in business, academia, and government. ACM is committed to developing information technology education, scientific research and application, and publishing the most authoritative and forward-looking literature, such as professional journals, conference proceedings and news bulletins, and in 1999 began to provide an online database service -ACM Digital Library.