YFT-201 is a flame retardant masterbatch with phosphorus nitrogen flame retardant as base material and thermoplastic resin as carrier. This product overcomes the problems of poor water resistance, uneven dispersion and unstable flame retardant of traditional phosphorus and nitrogen powder flame retardants. This product has high phosphorus and nitrogen content, halogen-free and low smoke. It has excellent flame retardant effect on TPU, TPE extrusion, hot-melt polyurethane injection molding, calendering, tape casting hot-melt adhesive film and other products.