1,Safety 2,By related certifications 3, Wearable, anti-slip, non-peculiar-smell 4,sound isolution, U.V. resistance Safety mattingAX Series:Materials:Top Layer: colored recycled rubberBottom Layer: Recycled rubberThickness: 20mm/25mm/50mmSelection: single color/dual color/In-laid PatternAE SeriesMaterials:Top Layer: EPDM (Ethylen-Propylen-Dienund-Polymethylen)Bottom Layer: Recycled rubberThickness ...