How to stamp the residual coins for stamps?

According to the inquiry of China Bank official website; If the holder of the incomplete or defaced RMB agrees to the confirmation result of the financial institution, the financial institution shall affix the bank name seal of "full amount" or "half amount" to the face of the incomplete or defaced RMB banknotes after exchange; Financial institutions should use special bags to seal and preserve the damaged or defiled RMB coins exchanged, and affix the "exchange" seal on the seal outside the bag.