Significantly mark the trial seal or trial number.

Mark the drawing approval number. Significantly mark the drawing approval number at the appropriate position of the map or the attached map graphic products; If it belongs to a publication, it shall indicate the design approval number on the copyright page; If there is no copyright page, the drawing approval number shall be indicated in the appropriate position; If it belongs to the Internet map service, the map approval number shall be marked in the lower left corner of the map page.

In order to strengthen the management of map audit and ensure the quality of maps, according to the People's Republic of China (PRC) Surveying and Mapping Law and other relevant laws and regulations, the published maps, imported maps, displayed maps and maps attached to production and processing products in People's Republic of China (PRC) need to be audited, and the map review number will be compiled and released after the approval.