A motor with gearbox is a mechanical device utilized to increase the output torque or change the speed (RPM) of a motor. The motor's shaft is attached to one end of the gearbox and through the internal configuration of gears of a gearbox, provides a given output torque and speed determined by the gear ratio.
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Nowadays, the lights have not only need to meet the lighting demand. According to the Ministry of Industry and Information Technology, as of the end of 2015, automotive lighting needs to meet the carbon dioxide emission reduction targets. In addition, new waves such as security and intelligence have also swarmed, which have provided a new vane for the development of the lamp market. 
<br> <br> tripod in the market overview of the market, the current market basically formed lamp halogen lamp, a xenon lamp (HID), LED based lights utmost three patterns.
Since 1960, the halogen lamp used for the lamp has been more than half a century, and it can be used for a long time in the car. The biggest advantage is that it has formed a market economy, which makes it Manufacturing costs are cheaper, which is one of the main reasons why they can still exist in the market. The shortcomings of the halogen lamp are self-evident: the light output efficiency is low and the irradiation distance is short.
Xenon headlights (HID, or high-intensity discharge lamps) were used in automobiles in the early 1990s. The advantage is that they emit twice as much light as halogen lamps. The efficiency of light energy is 80% higher than that of halogen lamps, while the energy consumption is only 2/3 of that of halogen lamps, and the service life is up to 10 times. In addition, since the color of the Xenon headlights is almost the same as that of daylight, Xenon headlights can create better visual conditions. Therefore, currently in the automotive lighting market, xenon lamps still occupy a dominant position. 
LED lights are smart or will lead the industry change
From the day the car was born, lighting is an important issue in the safety of car driving. From the earliest incandescent lamps, halogen lamps to xenon lamps, to the LED lights that are now becoming the new favorite of the market, the development of the lamp industry has been going on for more than a hundred years.