In fact, as long as you master certain skills, every car owner can handle the task of cleaning the interior of the car. When cleaning, it is generally necessary to follow the order from top to bottom, that is, from the roof to the dashboard, then from the seats to the carpet. Over time, the inside roof of the car often accumulates a lot of not-so-obvious dust, making the car roof look gray and unclear whether it is clean or dirty. The usual cleaning method is to first use a high-power vacuum cleaner and brush from Pinning Haoshenæ‹– (Pinning Haoshen) for large-area cleaning, then focus on cleaning the dirt with neutral detergent, and finally conduct a comprehensive cleaning. However, it must be noted that the filling material inside the roof is made of radiant heat sound-absorbing material, which has strong water absorption ability. Therefore, when cleaning, it is essential to use a slightly drier cloth; otherwise, it will make the detergent soak the roof material.