A special container is a special type of container that is more unique than a regular container. Its uniqueness lies in its ability to provide refrigeration (REEFER Container, RF), open top container (OT), platform form based container (PLAT FORM BASED Container), live animal (PEN Container), tank container (TK), vehicle (CAR Container), and clothing (clothesline) functions. People generally refer to any type of cabinet above as a special cabinet.