1.die casting aluminium 2.cheap factory price 3.life span>50000 hrs 4. ... work: 60WDistribution curve correspond with standardApply high power LED lamp wick and reasonable radiator; insure LED lamp high efficiency, light wane long, longevity ... .building facade lighting ,ect advantages:1, Lamp material is aluminum alloy , Circuit Board is Aluminum base plate, toughened glass Outer Cover2 ...