1.This product is mainly used by street lights and highway 2.CE,ISO9001,14000 approval 2.light source:LED or energy saving feature and specification 1 Super long service life.No filament and electrode in the bulb.Service life the bulb depends on natural attenuation of phosphor powder.It has the longest serive life among all light sources designed service lifetime index>60 thousdand hours.50 times ...