... can be assured 50000 hours. led indicator lampModl:B9BVolt:6V~220VUSE:On the telephoneMaterial:LED chip,PV,PCColour:Red,Green,Yellow,Blue,WhiteWorking ... and good photoelectric characteristic. Our factory mainly develops and produces LED lights, dot matrices, and various non-standard luminescent advices. Since ... equipment and machines to develop and produce Push Butters and Led Signal Lamps.