Roof Tile 1)ASTM, ISO9001, EN1177 certificates; 2)highly integrated and tight; ... granulesThickness15-90mmSize500mmx500mmColorBlue, black, grey, red, green, etc.StructureTwo layers: fine top layer and rough bottom layerCertificateASTM, ISO9001, EN1177FeatureHighly integrated, anti-moisture, anti ... , office buildings, hotels, markets, airports, etc.Warranty5 years Best-selling Roof Tile