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http://www.bathroom-sinks.biz granite sinkPhysical parameters of Shanxi Black:
Density: 3.04g/cm3;
Water absorption: 0.105%;
Compressive strength: 218.7Mpa;
Flexural strength: 30.5Mpa;
Destruction coefficient: 64.7Kgf/cm2;
Mohs hardness: >6