The seal of the invoice is stamped at or next to the place where the word "seal" is printed on the invoice, generally in the lower right corner of the invoice, and some are directly below it, not necessarily. When stamping, be careful not to hide important information, such as the amount, company name, etc. "People's Republic of China (PRC) invoice management measures" twenty-second.

Legal objectivity:

Article 10 of the Measures for the Administration of Invoices in People's Republic of China (PRC) overprint the unified national invoice producer seal. The style of the national unified invoice producer seal and the requirements for invoice layout printing shall be stipulated by the competent tax department of the State Council. The invoice producer seal shall be made by the tax authorities of provinces, autonomous regions and municipalities directly under the Central Government. It is forbidden to forge the seal of invoice producer. Invoices should be changed irregularly.