Does the subject want to ask "How does the Industrial Bank Credit Card app get a refund using the refund code" as follows:

1. Open the Industrial Bank Credit Card APP, log in to the account and enter the personal center page.

2. On the Personal Center page, find the "Refund Code" option, and then click Enter.

3. On the "Refund Code" page, select the bank card to be refunded and enter the refund amount.

4. Click "Generate Refund Code" and the system will automatically generate a refund code consisting of a series of numbers and letters.

5. Copy or save the refund code by screen capture, and show the refund code to the merchant who needs a refund to complete the refund.