LED Chip RGB Crystal Ribbon , Cerificate: CE,ROHS 1. This product adopts a kind of super flexible PCB board as base and adopts ... only makes the product completely waterproof, but also keeps the ribbon flexible and easy-curved. The stability, reliability, and safety ... 20mm(IMG-R24RGB-SF) 8. Special waterproof materials ensures the ribbon could work normally when temperature varies largely from -20° to ...