In order to meet the needs of users to the greatest extent, the library relies on Wanfang database resource system, National Science and Technology Library and other original text delivery units to provide users with original text delivery services. The original text delivery service is the request and delivery of full-text documents outside the library that cannot be directly obtained in our library, including: books, periodical papers, dissertations, meeting minutes in Chinese and foreign languages, etc. Original delivery is a fee-based service. The cost of each delivery consists of two parts: one part is determined by the library that provides the original text, including the cost of retrieval, copying, scanning and mailing, and the other part is the actual communication and printing cost generated by the library during the delivery process.