Guangzhou City of God letter Trade Limited is a professional manufacturer of GPS vehicle navigation products, developed the production iGPS brand and "Love Road" brand GPS vehicle navigation products. Dvd navigation in the GPS industry, efforts to forge into a first-class products, first-class management talent and high level companies. Company with a good reputation ability, quality of service, and constantly create value for customers. The company did for the original car navigation, deficiencies and domestic users DVD, reverse image of the urgent need for navigation and reverse image function, companies take the initiative to South Korea, Taiwan, the principle of learning products and installation techniques, the introduction of senior technical staff, combined with the user's needs additionally touch handwriting navigation. The company provides navigation upgrade Audi A4L, the Audi A1 navigation upgrade, the Audi A6L navigation upgrade, upgrade navigation Audi Q3, Audi Q5 navigation upgrade, the Audi Q7 navigation upgrade, please contact us. Guangzhou City of God letter Trade Limited is a professional manufacturer of GPS car navigation dvd navigation product manufacturers, independent research and production iGPS brand and "Love Road" brand GPS vehicle navigation products. The company's main portable navigation, built-in car navigation, and dedicated tablet navigation mobile phones and other digital consumer electronics products. The company pursues "the pursuit of innovation and excellence intentions" of the principle of Audi exclusive wholesale dvd navigation, product trend in the era of globalization, the constant pursuit of innovative products dedicated to the community, in good faith service to users, in the GPS industry, efforts to forge into a first-class products, first-class management talent and high level companies. Company with a good reputation ability, quality of service, and constantly create value for customers. The company provides navigation upgrade Audi A4L, the Audi A1 navigation upgrade, the Audi A6L navigation upgrade, upgrade navigation Audi Q3, Audi Q5 navigation upgrade, the Audi Q7 navigation upgrade, please contact us. Satellite positioning and navigation technology early development of satellite-based systems have the Navy Navigation Satellite System (known as meridian instrument, namely TMslt) and Russia TsZbda system, they provide only two-dimensional precision positioning services. Position values ??obtained frequency varies with latitude, this system features suitable for marine navigation and ground motion vectors, because it is very low speed, it is not suitable for aircraft navigation features and high dynamic motion vector. Because of these shortcomings, led to the development of the US Global Positioning System (oPs) and Russia's Global Navigation Satellite System (oLoNASS). Audi exclusive wholesale dvd navigation, dvd navigation, God provided by letter Trade Co., Ltd. in Guangzhou City of God faith. Ltd. Guangzhou City of God letter (www.shenxingps.com.cn) strong, credible, in other industries, Guangzhou, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the god of trade and you hand the letter into the brilliant, for a better future!