... 1)ASTM, ISO9001, EN1177 certificates; 2)highly integrated and tight; 3)resistant to strong wind, etc. Rubber Tiles ... layers: fine top layer and rough bottom layerCertificateASTM, ISO9001, EN1177FeatureHighly integrated, anti-moisture, anti-corrosion, anti-slide, anti-flaming, waterproof, anti ... roofs, playground, office buildings, hotels, markets, airports, etc.Warranty5 years Integrated Rubber Tile