Savings bonds's query method is as follows:
1. Log in to online banking and log in with my ID number. After entering the online banking page, select the function of "Full Financial Management ZJ" and click the column of "savings bonds-My savings bonds" to query the information of voucher-type national debt.
2. You can call the customer service phone number of the corresponding bank and ask what the customer service wants to inquire, subject to the reply of the bank staff.