What are the horizontal lines on the rear window of a car?

[MacClara]

The horizontal lines on the rear window of a car are a defroster, also known as a demister. Here is some related information about car windows: 1. Types: Car windows are generally divided into four types: front and rear windshields, ventilation windows, heat-insulating side windows, and sunroofs. The front and rear windows of a car usually use curved glass that is both aesthetically pleasing and provides good visibility, secured with rubber sealing strips embedded in the window frame or with special adhesives. To facilitate natural ventilation, the side windows of a car can usually be moved up and down or back and forth. 2. Window materials: As early as 80 years ago, glass was already installed on the Ford Model T, where flat glass was used at the front of the cabin to protect the driver from wind and rain. In the decades that followed, the glass industry gradually became involved in the automotive industry, creating various types of safety glass—laminated glass, tempered glass, and zone-tempered glass—greatly improving the performance of automotive glass.