When procuring a container chassis, the structural integrity and material quality are paramount. You should prioritize High-Tensile Steel (Q345B or T700) for the main beam to ensure a high strength-to-weight ratio. Key components to verify include axle brands (such as BPW or FUWA), braking systems (WABCO valves are industry standard), and twist lock durability. For specialized needs, consider whether you require a gooseneck design for lower center of gravity or an extendable chassis for handling multiple container sizes (20ft, 40ft, 45ft).