In automotive circuit boards, traditional single-layer PCBs, double-layer PCBs, and multi-layer PCBs are available, and in recent years, HDI PCBs have become the preferred choice for automotive electronic products due to their widespread application. There is indeed a fundamental difference between ordinary HDI PCBs and automotive HDI PCBs: the former emphasizes practicality and multifunctionality, providing services for consumer electronics products, while the latter strives for reliability, safety, and high quality.

In traditional automobiles, PCBs are mainly used in power control systems, body sensors, navigation systems, entertainment systems, etc., while the PCB increment of electric vehicles mainly comes from the vehicle controller VCU, microcontroller unit MCU, battery management system BMS.

Car navigation, also known as "car navigation" or "car navigation". It is a navigation device on a car. The general car navigation is carried out using the car GPS (Global Positioning System) combined with electronic maps. It can conveniently and accurately tell the driver the shortest or fastest path to the destination, making it a good helper for the driver.