Before our current lighting solutions we use MR16 light bulb. The problem were short lifetime and the locations that we place the light bulbs were high up in the ceiling. It was unappropriate to change the light bulbs during daytime, so we need to change it at night time. In hotel business, when the lights go off, it creates a bad impression to the hotel guest. Therefore, if we can choose a longer lifetime light bulbs, we would not need to change it frequently. We can save maintenance cost, as well as protect and our hotel brand image.