Inter-library Loan Service: ILL is the cooperation of the library network group. The objective is to share information resources that will bring benefits to service users. Providing services for borrowing and returning information resources or photocopying between libraries in case that there is no information resource that the users need. Moreover, it can find in any library in the network group, and any library can request to borrow/copy documents of that information resource to provide services to their users. This gives users the benefit of sharing information resources and saving the budget in procuring information resources of each library. Currently, there are more than 5,000,000 books in collaboration between libraries.