Our company has been manufacturing photovoltaic use controllers early since 1984. With more than 20 years history, our company ranks as one of the most famous controller manufactures in. Now, we can produce various kinds and different types of photovoltaic use controllers, including stand-alone controllers and whole set controllers. Our products have applied in many areas, such as solar powered plants, telecommunication, electricity power, weather stations, broadcasting and television, petroleum, navigation marks, railways and roads. Furthermore, our products have successfully endured atrocious weather, such as high altitudes and extremely low temperatures. With its high quality and stable performance, our controllers in the best coach fellow for all kinds of solar systems. Solar power controllers make up of electron circuitry. They can monitor the whole solar system, storage batteries and loads, so as to ensure the solar system working at its best state. Another function of controllers is to make the batteries’ charge and discharge limited to such range, therefore, to extend batteries’ life as well as to make sure the loads working smoothly.