A fabric having a mesh is a mesh. It is divided into organic woven mesh cloth and knitted mesh cloth (currently also non-woven), in which woven mesh cloth has white woven or yarn-dyed. It has good air permeability, and after bleaching and dyeing, the mesh cloth is not only for summer clothing, Especially suitable for curtains, mosquito nets and other supplies. The size of the mesh is used for printing, filtering, etc. There are generally three kinds of weaving methods for woven mesh: one is to use two sets of warp yarns (ground and twist) to twist each other. After the formation of the shed, interlaced with the weft yarn (see the leno weave). The twisting is twisted on the left side of the ground through a special twisted heddle (also known as semi-full), after one (or five, or five) After wefting, twist to the right side of the ground. The mesh-shaped small holes formed by the intertwining of the twisted yarns and the weft yarns are structurally stable, which is called leno; the other is the change of the jacquard structure or the piercing method, and the warp yarns are grouped into three groups and penetrate into one of the molars. It can weave fabric with small holes on the cloth surface, but the mesh structure is unstable and easy to move, so it is also called fake leno. There is also a plain weave structure, and the square flat structure forms the mesh with the density of the molars and the weft density (screen Knitted mesh cloth is also divided into two types, weft knitted knit mesh and warp knitted knit mesh. The raw materials are generally nylon, polyester, spandex, etc. The finished products of knitted mesh are called different methods. Screens are different from general mesh products. Instead, there are strict series of mesh sizes. In addition, there are mesh products that conform to industry, organization, and standards for classifying and screening objects. The selectivity of the screen is mainly based on the characteristics of the screen, material, wire diameter, mesh, length of life, and price. These elements of the screen are mutually influential. The thickness of the wire diameter, the wear resistance, corrosion resistance, high temperature resistance, and the presence or absence of magnetic properties of the material directly affect the service life of the screen.