The 4 axle flatbed trailer is known as a quad axle platform semi truck trailer. The 4 axle flatbed tractor trailer is a semi trailer with a container structure. They are mainly used in logistics systems supporting ships, ports, routes, highways, transfer stations, bridges, tunnels, and multimodal transport. The 4 axle flatbed container trailer is generally used to transport containers, bulk cargo, bulk cement, bulk rice, etc. It is mainly used for long-distance transportation. Generally, a 40ft flatbed trailer can transport 2*20 ft container or 1*40 ft container. If it is a large amount of transportation or different needs, we can customize it, or flatbed trailer some deformed vehicles. The loading part of the 4 axle flatbed truck trailer is determined according to the standard container size. A twist lock device for fixing the container is provided at the position corresponding to the four corners of the bottom of the container.