... lifespan 50,000hoursHousing MaterialAluminum Alloy+PCWorking EnvironmentIndoorFeatures of the led panel lights:1. Instant start, no flickering.2. No ... safety.6. Long lifespan >35000hours. Applications of the led panel lights:Popular applied for the office, school, hotel, ... safety.6. Long lifespan >35000hours. Applications of the led panel lights:Popular applied for the office, school, hotel, ...