A suitcase refers to a luggage compartment with a pull rod and rollers. Widely used due to its ease of use. At the same time, due to the placement of a pull rod in the suitcase, there are single tube pull rods and double tube pull rods, and the tubes of the pull rods are also divided into square tubes and round tubes, which facilitate dragging during walking and greatly reduce the burden.
A suitcase can be carried by hand or dragged. The wheels of the suitcase we usually use are mostly located at the bottom of the box. However, modern people have designed a new form of suitcase, which takes the shape of a cylinder with the wheels completely wrapped around the outside of the box.
This roller design allows this suitcase to better adapt to different terrains, such as easily going up and down stairs by pulling the suitcase directly. In 2012, the main materials used were cloth boxes, ABS hard boxes, leather boxes, PC, etc., and their usability was divided into three categories: directional wheels, universal wheels, and the latest detachable universal wheel pull rod boxes
