Material quality: Alloy aluminun casting shell , crystal glass and htigh temperature patience reflective paint inside. Specific and Main application: This product has great lights effect . The light ware is made of crystal glass. The effectof reflection and refaction from the crystal glass is more better than that of the PC ware , aluminun ware and the other metals material . The PC wareis easy to ageing and its color will become yellow . The aluminum one is easy to be oxygen , making the foggy effect . But these matters will not exist in the crystal glass . The light it shines is three-dimensional illumination , It makes the whole place bright . It is good at equaling the light. To compare with the same power of the lamp from the metal halide lamp.It over take one time or more to compare with the mentioned material . It is fit for the 4-25 metres highinside , and the light is soft . It makes a comfortable effectin the human’ s sense of sight . It also has a wide use in the industrial and commercallighting . It can effectively reduce the energy consuming and save the energy . This product has a good looking . It is the newest and promising lighting .