It is produced with phosphorous flame retardant, which is non-toxic and environmentally friendly, and its limiting oxygen index (LOI) can reach over 32% of European standards. The fiber has the characteristics of high strength, good tube forming, and uniform coloring, so that the product has low end breakage, complete unwinding, high weaving efficiency, and uniform and stable dyeing during post-processing. Product performance: good flame retardant performance, permanent flame retardant effect. Product use: protective clothing, household items, decorative items, non-woven fabrics, industrial textile materials, etc. Product specifications: 50-300D and other different specifications of round or special-shaped cross-section, dope colored flame-retardant fiber FDY or DTY.