... (2700-3000K,3000k-3300k,4000-4500k,5500-6000k)PCBExcellent thermal conductivity of aluminum plateBeam Angle 120°Input Voltage AC85- ... /BOXdifferent material and different process,extraordinary quality1) By high thermal conductivity of the aluminum plate,Built-in radiator.2) ... of aluminum plate coated with a layer of thermal grease particularly good. 4) Best of the welding temperature, and the ...