... digital control equipment2.Maintenance free3.CE,ISO9000,National Invention Patent outdoor trivision billboard,tri-vision display The specification:Scrollspeed : 0.15 ... material with High –quality stringy stainless;2.Acrylic plastic,3 Anti-oxidation aluminum.8. Each products individually packed. The Available Fields ... station,supermarket,restaurant,bank,exhibition, special size for indoor and outdoor.