... Price - Waterproof:IP65 - CE,ISO9001,ISO14001 - T/T P25 Square LED Sign Specification:ZD-P10, ZD-P12, ZD-P16, ZD-P20 ... maintain are free of charge.3.The counseling service of LED display are free of charge.4.The maintenance during all ... with very good quality All the plastic covers on the face of the display are designed by ourselves , not easy to ...