2) When leaving the country (if the shopping place is in an EU country, it refers to the last EU country on the journey), you need to go through the tax refund formalities at the customs. After verifying the goods purchased and the tax refund form, the customs will stamp the other two tax refund forms, and put one in a special envelope provided by the merchant and put it into the special mailbox for tax refund at the airport; Please keep another copy. If there is any dispute, this form can be used as proof to solve the dispute.