To cancel or change the depository bank 1, customers need to bring their ID cards and shareholder account cards to the counter; The authorized agent of the institutional client shall go to the counter with his original valid ID card, institutional shareholder account card, copy of business license stamped with the official seal of the institution, legal person power of attorney, legal person certificate, original and copy of legal representative ID card. 2. On the day when the depository bank cancels (the same day), the customer can't trade. First, the customer needs to go to the counter to settle the interest deposited by the three parties, transfer the interest to the principal, and then transfer all the remaining amount in the fund account to the bank account. The fund account balance must be zero. Handling of three-party deposit and settlement of interest: the teller handles the settlement of interest for customers through fund business management in the counter system → three-party deposit and settlement of interest → deposit cancellation. 3. On T+1day, the customer goes to the counter to fill in the application form for the third-party depository business of the customer's securities transaction settlement funds, and chooses to cancel the depository bank or change the depository bank. Cancellation of three-party depository relationship: the teller conducts customer management in the counter system → customer management → three-party depository business account business → cancellation of depository bank. 4. After canceling the depository banking business, you can re-designate the depository bank for the customer or cancel the account for the customer. 5. On the day when the depository bank cancels, the customer can't have any transactions. After the interest is settled in the account, all funds must be transferred out and the fund account must be zero. After the customer cancels the depository banking business in the sales department, it is not necessary to go to the bank to cancel the business.