Y-Shield RF Shielding Paint (1 liter size) High water resistance and environmentally friendly. Shielding attenuation: Attenuation of 36 dB (shielding effectiveness of 99.98 %) in one layer, attenuation of 43 dB (shielding effectiveness of 99.995 %) with two layers Perfect corrosion resistance: does not contain metalic particles, no oxidizing, provides long term durability Ingredients: Water, pure acylic binder, graphite, carbon black, additives, preservative.