In professional terminology, rearview mirrors are also called "rear-view mirrors" or simply "view mirrors", which are key devices in the vehicle safety system for observing road conditions behind. for technical specifications, rearview mirrors can be divided into three types according to their installation positions: interior rearview mirrors, exterior rearview mirrors and downward-view mirrors. Their mirror designs include different forms such as plane mirrors, spherical mirrors and double-curvature mirrors, all of which must comply with international safety standards. The electric rearview mirrors equipped in some models also have advanced functions such as heating, memory and automatic adjustment when reversing, and these systems have gradually become popular in mid-to-high-end models in the local market. Keeping rearview mirrors clean and adjusting their angles correctly are basic requirements for ensuring driving safety.