It is a mini book truck with caster to move books around.
It is a mobile bookshelf for moving data around or organization, and it prevents falling of book as it is designed with an internal slope.

There are two types of indoor trash cans: wall-attaching type and standing type.

The steel material is used for endurance and management convenience, and the gas shock absorber is attached on the frontal collection door to easily collect waste.
A visual sign is attached to lead separation collection.