An invoice in Hong Kong, that is, an invoice, is generally not much different from a receipt, which is different from the situation in China. Hong Kong invoices can be printed at will or by computer. For example, if you print a document from the computer and write the words invoice or English invoice on the head, it is already an invoice. Of course, it is best to have a stamp or signature, or a computer of the invoice company to print the logo, so as to prove it better in the future. Because China is a value-added tax, the unified invoice of the tax bureau is used, and the receipt printed by the finance bureau is used for accounting and reimbursement. There is no value-added tax in Hong Kong and there is no such provision, so it is different.