No deformation

After long-term natural aging, the rock has a uniform organizational structure, a very small coefficient of linear expansion, and the internal stress completely disappears without deformation.

High hardness

Good rigidity, high hardness, strong wear resistance, and small temperature deformation.

Long service life

No need to apply oil, it is not easy to stick fine dust, and maintenance is convenient and simple, with a long service life.

No scratches will appear, it is not hindered by constant temperature conditions, and its original physical properties can be maintained at room temperature.

Demagnetization

When measuring, it can move smoothly, without any stagnation, and is not affected by moisture. The plane is well balanced. Physical properties: specific gravity 2970-3070kg/m3; Compression strength: 2500-2600kg/cm2; Elastic coefficient: 1.3-1.5 × 106kg/cm2 water absorption rate.