Let us first understand the origin of marble: marble is the metamorphic rock formed by the high temperature and high pressure of the original rock in the earth's crust. Marble is mainly composed of calcite, limestone, serpentine and dolomite. Its main component is calcium carbonate, accounting for more than 50%. Others include magnesium carbonate, calcium oxide, manganese oxide and silicon dioxide. Marble stone characteristics and advantages: 1, no deformation, high hardness, strong wear resistance. 2, anti-abrasion, high temperature, maintenance-free. 3, physics is stable, the organization is meticulous, the film is detached by impact, the surface is not burr, the plane precision is not affected, the material is stable, the long-term deformation is not guaranteed, the coefficient of linear expansion is small, the mechanical machine/precision is high, rust and anti-magnetic ,insulation. Marble concrete can be subdivided into four categories: Class A marble: high-quality high-grade marble, with the same, excellent processing quality, free of impurities and pores. Class B marble: The characteristics are close to the former type of marble, but the processing quality is slightly worse than the former; there is a natural flaw, which requires a small amount of separation, gluing and filling. Class C marble: There are some differences in processing quality, and flaws in sputum, pores and texture are more common. Repairing these differences is moderately difficult by separating, gluing, filling, or reinforcing one or more of these methods. Class D marble: The characteristics are similar to those of Class C marble, but it contains more natural enamel and the largest difference in processing quality. It requires the same method for multiple surface treatments. Some marbles are also named and divided by origin, color, and pattern. Led High Bay Light,High Bay Lights,High Bay Light,Led Bay Lights Zhongshan Tiger Lighting Co.,Ltd. , https://www.tigerstreetlight.com