美國國家技術資訊局全稱為(National Technical Information Service)簡稱NTIS，研究報告包括專案進展過程中所做的一些初期報告、中期報告、最終報告等，反映最新政府重視的專案進展。該庫75%的文獻是科技報告，其它文獻有專利、會議論文、期刊論文、翻譯文獻;25%的文獻是美國以外的文獻;90%的文獻是英文文獻。專業內容覆蓋科學技術各個領域。
The National Technical Information Service (NTIS) is an agency within the United States Department of Commerce. The primary mission of NTIS is to collect and organize scientific, technical, engineering, and business information generated by U.S. Government-sponsored research and development, for private industry, government, academia, and the public. The systems, equipment, financial structure, and specialized staff skills that NTIS maintains to undertake its primary mission allow it to provide assistance to other agencies requiring such specialized resources.
Under the provisions of the National Technical Information Act of 1988 (15 U.S.C. 3704b), NTIS is authorized to establish and maintain a permanent repository of non-classified scientific, technical, and engineering information; cooperate and coordinate its operations with other Government scientific, technical, and engineering information programs; and implement new methods or media for the dissemination of scientific, technical, and engineering information, including producing and disseminating information products in electronic format and to enter into arrangements necessary for the conduct of its business.
NTIS serves the United States as a central repository for government-funded scientific, technical, engineering, and business related information to assure businesses, libraries, academia, and the public timely access to approximately 2.5 million publications covering over 350 subject areas. The stated aim of NTIS is to support the Department of Commerce mission to promote the nation’s economic growth by providing access to information that stimulates innovation and discovery. (Public Law 102-245, Section 108 American Technology Preeminence Act of 1991).