The description of the item 7308900000 of China HScode: Structures (excluding prefabricated buildingS of heading No.94.06) and parts of structures (for example, bridges and bridge-sections, lockgates, towers, lattice masts, roofs, roofrng frameworks, doors and windows and their frames and trresholds for doors, shutters, balustrades, pillars and columns), of iron or steel; plates, rods, angles, shapes, sections, tubes and the like, prepared for use in structures, of iron or steel: Other structures and parts of structures, of iron or steel; plates, shapes, tubes and the like, prepared for use in structures