1. Inspect the provided stone as natural stone, its material performance is satisfied or better than the natural granite (JB/T 7974-2001)
2. Quality Inspection Requirements: the outline dimension or allowable deviation value length ≤ ± 1mm, wide, thick ± 1mm, the surface smoothness stipulation value or allowable deviation value ≤ 0.5mm, diagonal stipulation value or allowable deviation value ≤ 0.5mm.
3. Whether the appearance quality of granite platform is a top product, the color, chromatic aberration and pattern of the block are reconciled and uniformly uniformly.
4. The surface of the platform is lack of ribs, horns, cracks, spots, color lines, pit appearance defects.
5. Whether the surface of the platform is brushing six stone protective coatings to ensure the waterproof and anti-pollution properties of the stone.
6. Whether the stone material through the National Stone Quality Monitoring Center of the relevant inspection, including physical, radioactive, freeze-thaw and so on, and have a closed inspection report.
7. Stone origin and name.