In order to strengthen the supervision of inspection and testing institutions and facilitate social inquiry and supervision, the General Administration of Market Supervision provides online inquiry service for the validity of inspection and testing report numbers. In the "Inspection ReportNo. Query" interface, enter the inspection report No.,and query the issuing time of the report and the information of the corresponding inspection and testing institution, so as to judge the authenticity of relevant inspection and testing reports. At present, the system supports querying the serial numbers of all valid inspection and testing reports since 20 16, as well as the basic information of relevant inspection and testing institutions.