led bulb E27 1. Hollow-out design 2.1-2 ... years warranty 4. Shenzhen factory Hollow-Out Heat Sink13W led bulb E27 Top Sale 40,0000pcs in 2011.ATZ Hollow-out ... design led bulb 5W,7W,10W,13W,16W,20W LED BULB Model : ATZ-BB-13WProduct Name: Led Bulb E27, Led Light BulbLED Bulb Power: 13W ... capacity in china.We are supplying approx 300,000pcs led bulbs to global market every month now.Marketing Policy ...