... span 3.Up to 90% energy saving 4.Environmental-protection Stainless Steel Buckle Side led message sign have the advantage as following:1 ... day and night4.Laser cut acrylic on the face,304# stainless steel with brushed, polished or painted finish on the side5.Water ... signs,school signs ,advertisement, architecture, decoration, exhibition, and lighting, etc. Stainless Steel Buckle Side led message sign