1. Headliner
headliner is top compartment cover. For the overall stiffness of the car body, the roof is not very important component, which is the reason the roof allows the cover to open skylight. From the design perspective, it is important how the front and rear pillars and the junction of window frames and smooth transition, in order to achieve the best visual sense and minimal air resistance. Of course, for safety headliner should have a certain strength and stiffness, the reinforcing beam generally increases in a number of roof, laying the roof inner insulating liner material to prevent conduction noise outside temperature and reduce vibration during transfer.