... life. Light attenuation per thousand hours is less than 3 ‰LED life 100000 hours; The whole lamp life 3 ~ 40000 hours ... , brand stores, shopping malls, hotels, office buildings, villas and other high-end home lighting.Installation method: embedded installed on the ceiling ... ban charged test or operation, otherwise will strike the bad LED.Shell color: silver, black, white, aureate, champagne and so on ...