... Charpy Impact StrengthKJ/17GB/T1043 OPTICAL PROPERTIESTotal Light Transmittance 93GB/T2410 420nm Light Transmittance 92ISO13468 420nm Light Transmittance after Irradiating by 1000 hours ... Main products:Transparent craft sheet,Colored signage board,Matte/silk board,Block thick board,Anti-wind board,Light-guide sheet,Saniware/sanitary sheet,Fire barrier ...