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The mesh count is expressed in China’s standards as the number of mesh holes per centimeter in length, while internationally it is indicated by the number of mesh holes per inch; it can also be expressed in terms of the size of each mesh hole in millimeters. The higher the mesh number, the finer the particle size of the material ； The smaller the mesh number, the larger the particle size of the material. The screening particle size refers to the size of the holes in the sieve through which particles can pass; the number of holes per square inch (25.4 mm × 25.4 mm) is known as the mesh count. The specifications of standard sieves vary from country to country. The commonly used Taylor system defines the sieve size by the number of holes per inch in length, which is referred to as mesh. For example, a 100-mesh sieve means there are 100 holes per inch on the sieve screen. The so-called mesh count refers to the number of pores in the sieve mesh. The sieve hole size corresponds to the standard mesh number: Sieve hole size: 4.75 mm; Standard mesh number: 4 mesh ； Screen pore size: 4.00 mm; Standard mesh count: 5 mesh ； Screen pore size: 3.35 mm; standard mesh count: 6 mesh ； Screen pore size: 2.80 mm; standard mesh count: 7 mesh ； Screen pore size: 2.36 mm; standard mesh count: 8 mesh. The term \"mesh size\" refers to the particle size or fineness of a material. It is generally defined as the number of openings per 1 inch * 1 inch area, that is, the number of holes in the sieve. The mesh size indicates how many such holes the material can pass through; for example, 200 mesh means that the material can pass through a sieve with 200 holes per 1 inch * 1 inch area. By the same logic, the higher the mesh number, the finer the particle size of the material; the lower the mesh number, the coarser the particle size. The higher the mesh number, the finer the particle size of the material ； The smaller the mesh number, the larger the particle size of the material. The screening particle size refers to the size of the openings in the sieve mesh; the number of openings per square inch (25.4 mm × 25.4 mm) is known as the mesh count. For example, 6 mesh means there are 6 openings within 25.4 mm.