Material and features:
   High-pressure die-casting aluminum case,extemal,electro-static powder spraying.
   Heatproof silicon gasket; Thermally hardened glass of 4mm thichness.
   Backside gearbox, helpful for heat proofing of the electric components.
Applicable places:
   The illumination of the airports, harbors, urban fly-over bridges, gymnasiums,parking places, large-scale squares,etc.