I have been in LED light for that many years, from beginning know very little about LED light, now can tell the difference chip source, and even know good acting LED light also depends on inside configure, not just the out looking. Human being are always in the way development. In the fast way when it comes to 20 century. From tradiction eletrical lamp to solar lamp. Nowadays, due to the fast development of technology and the ecomomy. Industrial electricity demand is increasing, and the environment is becoming more and more polluted. People began to worry about the future of the earth, and more and more people began to pay attention to solar energy. Therefore, solar power generation and solar lamps were born. While protecting the environment, it can also reduce electricity bills, and it can also be used as a garden decoration.If you want to know more about the solar lamps. Don't hasitate to message me.