1. Saving 80% of the power consumption 2. High visibility 3. Clear screen and ruggezation. 4. Low-calorie open sign1) Can display ... of colorLed billboard can be used in the following areas:1. Construction signage: building sign, region sign, department sign, house ... bus, sign of bus stop, etc advantages of Led billboard:1. environment-friendly2. up to 80% energy-saving3. comfortable visuality4. ...