-Zone 1&2, Zone 21&22 -Die casting shell made of cast aluminum alloy (cooper is less than 0.4%), surface is high voltage electrostatic spray paint after high speed shot blasting, good corrosion proof. -With the hole for easy opening, and the patented structure (automatic suspended security structure), make lamp replacement fast, convenient and safe. -Unique diffuse reflection design to make light soft and wide angle of illumination
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