Automotive glass is an indispensable part of the car body attachment, mainly for protection. The automotive glass is mainly composed of laminated tempered glass and laminated tempered glass, which can withstand strong impact. Laminated glass means that a transparent adhesive plastic film is applied between two or three layers of glass to combine the toughness of the plastic with the rigidity of the glass, thereby increasing the crush resistance of the glass. Tempered glass refers to the quenching of ordinary glass to form a certain internal stress in the internal structure, so that the strength of the glass is strengthened. When the impact is broken, the glass will split into small pieces with blunt edges, which is not easy to cause damage to the occupants. The regional tempered glass is a new type of tempered glass. It has been specially treated to maintain a certain degree of sharpness in the crack of the glass when the impact is broken, so as to ensure that the driver's field of view is not affected.