YSHIELD EMF Shielding Paint HSF54 5 Liter High water resistance and environmentally friendly. Attenuation of 36dB (effectiveness of 99.98%) one layer, 43dB (effectiveness of 99.995%) two layers Perfect corrosion resistance:no contain metalic particles, no oxidizing, long term durability Contains: Water, pure acylic binder, graphite, carbon black, additives, preserva