... 1.The LED bulb commonly adopt standard screw(E27) socket,AC 220V supplied,convenient to replace common incandescence lamp and fluorescence lamp ... large contain's,have no polute to the enviroment.8.LED bulb can use low safe voltage of 5V,12V,24V ... strength engineering plastic,endure impact,shock and resist fragile.10.LED lamp have the advantage of saving energy,environmental protction and ...