Warp knitted fabrics are often made of polyester, nylon, polypropylene and other synthetic filaments as raw materials, but also with cotton, wool, silk, hemp, chemical fibers and their blended yarns as raw materials for weaving. Common warp knitted fabrics are often woven with braided chain organization, warp flat organization, warp satin organization, warp diagonal organization and so on. Fancy warp knitted fabrics, many kinds of common mesh fabrics, terry fabrics, pleated fabrics, plush fabrics, lining weft fabrics, etc.. Warp knitted fabric has the advantages of good longitudinal dimensional stability, brace, disperse small, not rolled edge, good air permeability, etc., but its lateral extension, elasticity and softness is not as good as weft knitted fabrics.