Solar billboard features:
1. Flexible, convenient installation, need not dug trenches wiring,
2. Energy conservation and environmental protection, evening automatically open during the day, automatically shut off. The electric + controller to control work time, LED lamp and strong penetrating power,
3. Beautiful, all adopt the stainless steel overlock add ring the plastic,
4. The low voltage dc power supply, high safety, an investment, long-term benefit ,
5. long life.