... * Product dimension: Dia78*23mm * Opening: 60mm * LED Quantity: 3PCS, high power LED downlight, * Luminous flux: 80-90lumen per watt, 90 ... 2. Sample inspection: Product appearance access, component (LED chip and driver)test, finished product test(voltage, current, lumen flux etc. ). 3. ... in non-dusty plant. 4. 3-5 hours aging test from high-tech aging machine, including 3600-6000 times on-off-on-off ...