... , school. Waterproof, high quality Luminous Letter / LED Sign letter / Advertising sign Used of shops, hotel, hospital, school.Waterproof, high quality1 ... Material: super acrylic vacuum forming, 304# stainless steel or metal frame, led module inside2.logo: stick graphics or silk- ... m23060~250QualityPatented products, high quality material,non-maintenanceRegular maintenance Advertising Metal Letter Sign