2. A deposit slip, also known as a "certificate of deposit", is a deposit certificate issued by a bank to depositors.

Deposit certificates are divided into time deposit certificates, interest-bearing deposit certificates, time deposit certificates and convenient deposit certificates. Time deposit certificate is a kind of deposit that is agreed to be paid at maturity. It is suitable for saving your life savings in a certain period of time in the future. The minimum term of time deposit in China is 6 months, and the maximum term is 8 years. The interest rate is much higher than the current deposit. The longer the deposit period, the higher the interest rate.