Product Name: Aluminum Alloy Trolley Suitcase

Luggage with handles and wheels is widely used for its convenience. It comes in single-bar and double-bar models, with options of square or round handles for easy maneuvering and reduced strain. These suitcases can be carried by hand or pulled along, with most wheels positioned at the bottom. Modern designs have introduced a new shape with a cylindrical case, where the wheels are encased entirely on the outside. This roller design allows for better adaptation to various terrains, enabling easy navigation up and down stairs. In 2012, the main materials were fabric, ABS hard cases, leather, and PC, categorized into three types: directional wheels, swivel wheels, and the new detachable swivel wheel suitcases.