9w led bulb 1. indoor lighting 2. Epistar, Edison, Bridgelux chip 3.high lumen output 4. ... life-span etc. 2.Widely use in illmination and decoration lighting especially for indoor lighting ,office building. supermarkets ,hotels, meeting room, restaurants, showroom, club ... parks, yards, clothes-shops, jewelry shops, mobile city and other lighting. Testing Room for LED bulbs72 hours testing