Tower International manufacturers engineered automotive structural metal components and assemblies. Co.'s products include: Body structures and assemblies, which form basic upper body structure of the vehicle and include structural metal components such as body pillars, roof rails, and side sills; Chassis and lower vehicle structures, which include chassis structures that make up the skeleton of a vehicle and which are critical to overall performance in the areas of noise, vibration and harshness, handling, and crash management; and Complex body-in-white assemblies, which are comprised of multiple components and sub-assemblies welded to form major portions of the vehicle's body structure.