... price 2. Good heat dissipation 3 COB LED Light source 4,CE&RoHS&EMC Certificate Model No. ... Temp 3000-4200,4200-5500,5500-6000Led light source COBLight output(lm)400Beam angle 60Power5Input ... --- best material for heat dissipation --- keep lower light attenuation 3,Widely & generally used 4,High power ... ,000 hs 6,70-80% energy saving 7,CE&RoHS&EMC certification approval 8,Environmental protection ...