... under ultra-violet radiation, dampness, heat, chillness and impact.SpecificationThickness3.0±0.2mmWidth720mmLength219mm or as requiredWeight6kg±0.1kgSurfaceMatte ... to ultra-violet radiation, dampness, heat, chillness and impact, the products remain the stability of color and physical ... climateShengyu synthetic resin roof tile is tested by falling sphere impact test,( a 1kg steel ball falls freely from ...