The chassis of the Heavy duty 4 side Logistic Trolley roll container uses a square tube frame, the bottom sheet metal tray folds sideways, and the bottom frame is made of reinforced metal flat steel. The flat steel structure can increase the stability of the chassis, reduce shaking and tilting during transportation, and ensure the safety of the goods. Compared with ordinary steel, reinforced metal flat steel has better wear resistance and impact resistance, which can extend the service life of the trolley and reduce the frequency of maintenance and replacement. The container structure adopts a round tube frame with 50×50 wire mesh included. The top cover can be folded over the side panels. According to different usage needs, you can choose to use or not use the top cover, improving the flexibility and versatility of the trolley. When it is time to load and unload goods, the top cover can be folded on the side panels, making loading and unloading of goods more convenient and faster, and improving work efficiency.