Bank-enterprise signing center refers to the account that has signed the electronic banking business at the bank counter. Online banking non-contracted savings accounts cannot handle online payment transactions. Credit card accounts (generally not signed at the counter) can be paid on Taobao after opening online banking.
After registering and opening personal online banking online, they are only non-contracted customers of online banking. If you need to become a contracted customer, you need to go to the local CCB counter online banking to sign the contract.