1. There is a customer service phone number on the card face of the credit card. You can call the customer service number on the card, and then you can manually check the bank of the credit card. If you don't want to make a phone call, you can also check the phone number on Baidu credit card online to see which bank it belongs to, so that you can know the bank of the account.

2. If you can't find the customer service phone number on the credit card, you can also pay attention to the official WeChat account of each bank, which generally has the function of bank inquiry. Taking the construction behavior as an example, WeChat pays attention to "CCB Customer Service" in the official WeChat account, and then sends a query of "bank of deposit" on the page, clicks the pop-up link, and inputs information according to the page prompts to query the bank of deposit.

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