Since the domestic automotive sensors 1980s, car sensor type, the domestic auto industry, the introduction of foreign advanced instrumentation technology and with the support of sensor production technology, sensors on the car, basically meet the domestic small-volume, low-level models supporting needs. Due to a late start, has not yet formed, supporting, independent industry has not yet formed, still attached to the car dashboard business. Number of cars, light trucks and some trucks in the introduction of new electronic products, a large-volume, high levels of automotive sensors, but the highest level of the existing domestic automotive sensor product than similar foreign products behind 10 years, annually imports 500,000 sets more performance automotive sensors. Automotive sensors - speed sensor speed sensor is an electric car more important sensors are also more sensor applications. By definition, velocity sensors are used to measure the speed sensor, Tangshan automotive sensors, divided into speed sensors, speed sensors, wheel speed sensors. Speed ??sensor is mainly used for electric car motor rotation speed detection. There are three commonly used speed sensor, respectively, electromagnetic induction type speed sensors, speed sensors photoelectric sensors, Hall-effect speed sensors are non-contact measuring principle, in order to enhance detection of security, improve detection accuracy. Sensors on the car, Xinfeng (certified), Tangshan automotive sensors provide sensing Xinxiang City, Xinfeng purification technology Limited. Xinxiang City, Xinfeng purification Sensing Technology Co., Ltd. (www.xfcgq.com) (www.xfcgjh.com) is a leader in Xinxiang, sensors, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. In Xinfeng leadership with the staff warmly welcome all inquiries negotiations to create a better future Xinfeng.