... Not flicker , High Luminous efficiency output, low lumens decline, less than 1% after 1000hrs .3, Cooling performance is good, in ... , Power factor above 0.99 .5, Production materials :High performance silicone grease Thermal silicone grease leader——DOW CORNING(USA) Seventy ... years of history,UL certification,High safety and reliability ALPHA(USA) Solder wire Environment ...