The invoice stamp is stamped on 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 in the middle below, not necessarily. When stamping, be careful not to cover important information, such as the amount, company name, etc. Article 22 of the Measures for the Administration of Invoices of the People's Republic of China is objective in law:

Article 19 of the Measures for the Administration of Invoices of the People's Republic of China: Units and individuals that sell goods, provide services and engage in other business activities collect money from foreign businesses, and the payee shall issue invoices to the payer; Under special circumstances, the payer will issue an invoice to the payee. Measures of the People's Republic of China on the Administration of Invoices Article 2 All units and individuals engaged in production and business activities shall obtain invoices from the payee when purchasing goods, receiving services and engaging in other business activities. When obtaining an invoice, it is not allowed to change the name and amount. Measures for the Administration of Invoices of the People's Republic of China Article 3 The term "invoice" as mentioned in these Measures refers to the receipt and payment vouchers issued and collected in the course of buying and selling commodities, providing or receiving services and engaging in other business activities.