The position of the roof above the window glass is called skylight or built-in skylight. The following is a detailed introduction: 1. Built-in skylight: refers to the skylight in which the sliding assembly is placed between the room and the roof. Its advantages are large skylight opening and simple and beautiful appearance. Most cars use built-in skylights. However, if this kind of built-in skylight is installed, the price will be higher, and because the interior of the roof needs to be redone, the construction technology required is also very high. 2. Convex skylight: Convex skylight has the advantages of small size and simple structure, and there are two categories: manual and electric. The skylight inclines upward and opens at a certain angle, but the opening size is limited. 3. Panoramic skylight: The automobile panoramic skylight is actually relative to the ordinary skylight. Generally speaking, the panoramic skylight has a large area at first, even a whole glass roof, and you can get a panoramic view of the above situation when you sit in the car. Panoramic skylight has the advantages of wide field of vision and good ventilation. However, panoramic skylight also has some shortcomings and high cost; The falling dust needs to be cleaned up or it will affect the line of sight; The overall stiffness of the car body decreases and the safety factor decreases. But in any case, the panoramic skylight with large vision is still favored by many consumers.