... suitable for any purposes of applications. DescriptionWood Grain Fiber Cement siding BoardRaw Materialsfiber, cement, quartz sand, ... no cracks and lamination should occurnoQualified7Bulking Factor,≤≤0.50.18Qualified8Incombustibility(A class)Average temperature rise,°C ... ,%≤5010.3Qualified9Radiation limitInternal radiation index,IRa≤1.0∠0.1QualifiedInternal radiation index,Ir≤1.30.1Qualified10Air Sound ...