1. Choose to produce a regular large factory

　　As a high -tech product, the car navigator involves many high -tech areas. A full -featured and high -quality car navigation product needs strong technology and manufacturing strength support. Because the market is in a high -speed growth period, there are no less than 1,000 manufacturers in China who are doing navigation products in China, but most of them are small factories or handmade workshops, and there are only a handful of real regular large manufacturers. There are many manufacturers, but the qualification rate of quality sampling is only 30 %. At present, the domestic -scale car navigation product manufacturers include Takuang, good helpers, and flying songs. Another reason to choose a regular large factory is that they generally pay more attention to after -sales service and have a complete after -sales service system.

　　2. Software upgrade is important

　　When most consumers buy car navigation, there is a misunderstanding. They often care about hardware, and they will pay more attention to the appearance when choosing. The navigation software function can be said to determine the navigation performance of a navigation product. The core part of the GPS navigation is the map. Generally speaking, the map Z needs to be updated once a year. At present, many GPS brands provide upgrade services for free, but some companies have not updated the promises of the map, or they need to charge fees. Consumers must understand when they buy.

　　3. Look at the signal receiving ability

　　As a navigation product, Consumer Z cares about its star collection ability, that is, signal receiving ability. Most of the car GPS sold on the market currently uses the third -generation chip of Sirfstariii. The advantage of this type of chip is that they can capture and track signals in the case of harsh and bad weather conditions to reduce signal interference caused by high -rise buildings. In addition, the quality of the chip is directly related to the calculation path, which is fast and accurate.

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