China Postal Savings Bank. According to Caiti's query. The highest interest rate is the Postal Savings Bank. Only the current account is 0.3% like the other five major banks, and the interest rate for three months to five years is higher than the five major banks, especially for the three-year period of 4. 125%, which is higher than the other five major banks. China Postal Savings Bank (Yibin Rhine Sub-branch) is located at 65438, East Section of Xufu Road, Xuzhou District, Yibin City, Sichuan Province.