... 5W LED Bulb 1. Cree/Edison/Bridgelux/Epistar 2. Factory, 100h aging testing 3. 2-3 years warranty 4. Certificated 5W LED ... 3. About he quality of LED products:first,selecting the led chip,because led lighting is made of led chips,because the lighting ... using BridgeLux, Epistar chip, has the advantage of good quality and high brightness,(other brands of chips according to customers requirements) ...