... produced by your requirement Used in engineering industrial High Hardness Granite Surface PlateMaterial: Granite mainly composition is augite,Plagioclase ... ageing,uniform texture,good stability,high strength ,high hardness and so on.It keep high precision in heavy ... of linear expansion 4.61×10-6 /°C Shore hardness:above Hs70Bran granite surface plate accuracyrefer advanced leading countriesstandard ...