Fire Retardant Yarn is made of imported aramid fiber by twisting.Aramid Filament Yarn has high strength, high modulus and high temperature resistant, fire retardant, acid and alkali resistant, anti-aging, light weight, good performance, its strength is 5 ~ 6 times that of the steel wire, modulus of steel wire or fiber glass 2 ~ 3 times, 10 times of high strength nylon industrial yarn, toughness is 2 times of wire, and weight is only about 1/5 of the steel wire, continuous use temperature range is - 196 ℃ ~ 300 ℃, under the high temperature of 560 degrees not decompose not melt.It has good insulation and anti-aging properties, and has a long life cycle.