1.Introduction to obile phone navigation and in-vehicle navigation businesses 2.Market demand for navigation business - The in-vehicle navigation market of China has just taken off, and is at an infant stage, when the business penetration rate is only 1% - Registered vehicles in China will grow rapidly - The professional users demand for all kinds of navigation and supervision service - 88%of the people who never tried navigation service before say they are interest in it, and 77% has already tried 3.What has been drawing navigation business back: price, the maturity of products and services 4.Mobile communication promotes the integration and development of navigation business - Mobile phone navigation and in-vehicle navigation are complementary to each other in terms of target customers - Mobile communications brings new opportunities for the navigation industry