... MaterialHigh level 304# stainless steel,aluminum, and acrylic sheets2Technique Processwelded,polished,brushed,painted,electro-plated3Light SourceLED modules ... inside4LED FeaturesWaterproof, high lighting, energy saving, and 50.000 hours ... certificated LED module use Rishang chips,2.Super high brightness,Light uniformity,over 50,000 hours ...