If you require a tax refund to a credit card, put the tax refund form stamped by the customs into the special tax refund envelope provided by the store and put it in the airport mailbox. You will receive the refund in about one to one and a half months. If you do not receive a refund for a long time, you can call the customer service of the card issuing bank to inquire. A simple process is attached. Please read on for details and precautions after reading the process. 1. You need to shop at a merchant with the TAX REFUND logo. 2. After shopping reaches the amount that can be refunded, ask the merchant for a tax refund form and fill in the details. information and need to provide passport and credit card guarantee