(This system is based on Microsoft VS2005+C#+MSSQL, with advanced technology, complete modular solution, strong scalability, official letter circulation, receipt, issuance, office flow management, document management, data analysis, and graphical process solutions to make the office clearer , Online correction of documents, and the use of seals are kept confidential. The correction documents can be entered into the trace office together, and the deleted words can be completely remembered and managed after the correction is realized.)