Car electronics is an electronic system and product used in automobiles to increase vehicle functionality. Car electronic including car audio systems, navigation systems, automotive information systems and automotive home appliances. Car PC, car network and cruise system to car into a new IT and communication center, and car audio, car TV, car refrigerator also meet the needs of users of automotive appliances. Car audio is the highest penetration of automotive electronic products in the equipment, product upgrading is an important driving force for market development. In the existing car audio equipment, CD machine penetration rate of more than 80%, but DVD players and MP3 audio equipment factory assembly rate is still very low, great potential.