After receiving this call, you can go to the bank branch of the bank to inquire about the authenticity of the certificate, or you can call the customer service hotline of the bank credit card to verify it. This is the first standard credit card in China. The credit limit of the card is preset according to international standards, and it is used for overdraft consumption and cash withdrawal transactions without pre-deposit. It's best not to disclose personal information in case you are cheated.