The detailed inquiry method of ICBC account opening bank is very simple and easy. First, you can search through ICBC’s WeChat banking service. Search "ICBC Electronic Banking" on WeChat, follow it, select the "Search Account Bank" function in "Account Services", and follow the instructions to get your account bank information.

Another way is to inquire via text message. Just edit the text message "KHH#your card number or account number" and send it to 95588, and the bank will immediately reply with your account bank information. For VIP customers, they can call the VIP hotline 4006695588 at 95588. Whether it is manual service or self-service voice, it can help you check the bank where your account is opened.

As for ICBC's credit card business, data show that in 2007, its credit card issuance volume reached 23.38 million, and its consumption reached 161.9 billion yuan, demonstrating its leading position in the credit card market. By 2009, the number of credit cards issued by ICBC exceeded 52 million, with an annual growth rate of 33%, making it the fourth largest credit card issuer in the world. These achievements reflect ICBC's strong strength and innovative capabilities in financial services.

In general, whether it is to inquire about the account opening bank or understand the business development of ICBC, ICBC provides convenient services and rich functions. Through the above methods, you can easily get the information you need.