Article 28 of the Detailed Rules for the Implementation of the Measures for the Administration of Invoices in People's Republic of China (PRC) stipulates that when issuing invoices, units and individuals must fill in according to the number order, fill in all items with true contents and clear handwriting, print all copies at one time, and affix the special seal for invoices on the copies of invoices and the deduction.
Therefore, the invoice must be stamped with a special invoice seal, and the official seal and financial seal do not meet the requirements. The obtained invoice is not stamped with the official seal of the invoice user, and can be reimbursed as long as it is stamped with the special invoice seal.