led letter lights sign 1.CE/RoHS/ISO9001 certification 2.Own factory,competitive price,OEM service 3.Customized Led letter lights sign specification: 1 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 guaranteed ...