The automatic banknote storage tank is a container specifically designed for storing banknotes. Unlike traditional piggy banks, this type of piggy bank can automatically roll banknotes into a cylindrical shape, making it more convenient for storage and management. Usually, the internal structure of the automatic roll up coin storage jar consists of a paper roller and springs, which automatically roll up when coins are placed.

Automatic banknote storage tanks are usually made of sturdy materials such as plastic, metal, etc. They not only have high strength and corrosion resistance, but also are easy to clean and manage, making the items stored inside safer and healthier.

The main purpose of the automatic banknote storage tank is to help people better manage and store banknotes, avoid loose or wrinkled banknotes, and also make it easier for users to retrieve banknotes for use.

It should be noted that although the automatic banknote storage jar is only a practical tool, safety also needs to be taken into account during use. For example, users should use their devices correctly and not attempt to operate in illegal ways to avoid causing property damage and security threats. At the same time, in order to protect their privacy and security, users should also properly keep their device passwords and personal information.