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Hayes quartzstone is a kind ofengineered quartz stone which is made up of 90%-93% natural quartz mixed with resin, granite power, christobalite, pigments by high technology machine in high pressure and under vacuum state. Hayes quartz stone suitable for residential use ( kitchen countertops, bars, wall furniture, etc.) and public building ( cabaret, canteen, bank, hospital, exhibition, laboratory, etc.) Thickness: 8mm to 30mmStandard size: 3030*1530mmColor: More than 50 colors are availableSpecifications and colors could be adjusted to meet out customers' requirement.Tech Data:Test Specification UnitStandard RequirementResultSand Hole__No 2mm or larger sand holes on front surfaceNoneScratch__No obvious scratch, 1.5m from eyes measurementNoneCrackFront__No cracksNoneBottom__No cracks larger than 1/4 of the length the crack extendedNonePlaness Tolerance (Length400mm≤0.500.08Angle Tolerance (Length400mm≤0.400.1Desityg/cm3≥2.52.4Water Absorption≤0.20.06Flexible StrengthDryMpa≥1649.7Compressive StrengthDryMpa≥90203Mohs Hardness__≥35.6RadiactivityA: IRa≤1.0,Ir≤1.3 B: IRa≤1.3,Ir≤1.9 C: Ir≤2.8IRa=0.07, Ir=0.14