Outdoor large led advertising display features:
1. Taiwan Epistar LED chips, high good quality leds
2. With pure copper wire connection in LEDs
3. Grand A row material for module frame and mask
4. 4 layers PCB and copper plating thickness > 18mil
5. Stainless steel screws when assembling
6. 2 to 3 years warranty
7. Long span time, 10000hours