... :Less than 0.20% 2.hard for any scraches 3.fashion color for projects Product Artifical quartz tile,slab,countertopPlace of OriginXiamen ... , 3000X1200mm, 1200x2400mm, 1200x1200mm, 1200x600mm, 600x600mm, 600x400mm, 300x600mm, 300x300mmThickness12,15,18,20,30mmCharacteristics1)High hardness, the Moh's hardness reaches to 6 ... friendly building materials not contain any pollution and radiation. quartz slab