led bulb led led light Long life span. Attenuation <30% after 40000 hours led bulb led led lightProduct DescriptionFeatures1,Original radiator structure (national patent), no ... design,avoiding electric current's direct impact to LED chips,protect LED efficiently and prolong its service life.3, ... a ideal temperature(TJ<60°C,when environmental temperature Ta=25°C)9,No UV, no radiation.ParametersWorking ...