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Optical properties of the absorption rate of> 95%, the emissivity <9%. Resistant to neutral salt spray> 200 hours, resistance to high temperature aging resistance of 250 ℃> 200 hours, xenon arc lamp artificial climate aging> 200 hours, UV accelerated aging> 1000 hours , Layer adhesion 1 level.

Optical Specifications：1.Absorbing layer,Absorption rate>95%，Emissivity<45%;2.Emission layer, emissivity >95%,Absorptivity<50%.