Granite mini slabs select material from the underground high quality lithosphere.Through trillion year natural aging, the shape is extremely stable and no need to worry about the distortion because of the conventional temperature difference. The granite mini slabs after the strict physical testing and the choice of granite material, the crystal is close, the quality is hard. Because the granite is the nonmetallic material, nonmagnetic responded certainly that also does not have the plastic deformation.Granite mini slabs degree of hardness is high, therefore the precision retentivity is good.After the long-term natural aging, the organizational granite mini slabs average is minimum, the internal stress vanishes completely, does not distort, therefore the precision is high.It will not be easy to stick the dust particle, will maintain, maintains convenient simple, the service life will be long.Does not magnetize, measures when can move smoothly, the non-detention feeling, is not affected moistly, the plane name arranges.The pan-scratch, the constant temperature premise impediment, also will not be able to maintain the temperature measurement quantity precision under the normal temperature.