porcelain Carpet Tile

polished porcelain tile,carpet,porcelain decor tile, 1 set=6pcs=2cartons=2.16 square meters SNItem (Verona Carpet Tiles)EU Standarts EN176-91CN Standarts GB/T4100.1-1999Verona Index1Water absorption<= 0.5%<= 0.5%<= 0.2%2Breakage Pressure (N)>=27>3500 or >35>=1700N3Glossinessn/a>=60>=604Tolerance of Thickness %+-5+-5-45Surface Flatness %-0.5+-0.2+-0.136Modulus of Rupture(MPA)>=27>3500 or >35>=38Mpa7Rectangularity %-0.6+-0.2+-0.18Abrasion Resistance Mm3<=205<=175<=1409Mohs Hardness>=6n/a>=610Resistance to Thermal Shockn/a145 Celsius - 15 Celsius no crack after 10 circlespast11Frost Resistancen/aNo crack or spalling after Frost resistance testpast12Resistance to Household Chemicaln/an/aUA13Resistance to Acid or Alkalin/an/aULA,UHA14Resistance to Glaze Crackingn/an/apast15Tolerance of Size %+-0.6+-1.0mm+-0.6mm16Sides' Straightness %-0.5+-0.2+-0.13