... Index:>80Life time:>50000Hours Protection Rating:Indoor use only Color light:Cool white ,Warm white, Pure white, Red, Green, Bule ... base, PMMA coverConversion Efficiency >85%Ambient Temperature:-20ºC-50ºC Features:1) We use high power LEDs as light source with high ... and offices: Safe and reliable, no flickering, downy and pure light, which can relieve visual fatigue effectively and protect eyes. No ...