... and also by the air ventilation. The design ensures a 50,000 hours life-span for the LED. If ... so it can control the LED light pertinently in a needed area. This special design can improve the ... is 10 million hours. A semiconductor light can be used under normal circumstances 50 years, even if the ... small size, can flat pack, easy to develop into a compact size of the product, made of point , line ...