... .0mm--8.0mm 2.100% pure pvc/vinyl raw material 3.pvc foamed back 4.ISOcertificates Indor Sports Flooring RollsShijiazhuang YiChen ... foaming buffer layerSurface pattern: lychee pattern ,plain,wood grain,marble, tree bark,cloth,dene grain are optionalBacking: accidented foamed back, non ... For 3.0mm, 2.5kg/sqm approxFor 3.5mm, 2.8kg/sqm approx For 4.0mm, 3.0kg/sqm approx For 4.5mm, 3.5kg/sqm ...