1.The luminous efficiency is more than 100LM/W 2.with CE, TUV certification 3,life-span is 50,000 hours 4,warranty is 3 years FeaturesAnodic oxidation reflector and the design of patent heating bodyAcrylic glass coverSingle high powerful (30W-100W) LED light sourceHigh efficiency stable LED driver UsageWorkshops, factories, storehouses, toll stations, gas stations, supermarkets, exhibition halls, ...