... of shops, hotel, hospital, school. Waterproof, high quality Luminous Letter / LED Sign letter / Advertising sign Used of shops, hotel, hospital, school.Waterproof ... light boxes:1.Material: super acrylic vacuum forming, 304# stainless steel or metal frame, led module inside2.logo: stick graphics or ... bright at night, attract customers' sight Outdoor Advertising Signboard Stainless Steel Letter