... visibility 3. Clear screen and ruggezation. 4. Low-calorie open sign1) Can display several kinds of languages, such as English, French, ... in the following areas:1. Construction signage: building sign, region sign, department sign, house sign, etc.2. Public signage such as NO smoking ... . Traffic sign: name of road, sign of caution or ban, route of bus, sign of bus stop, etc advantages of Led billboard:1 ...