High strength nylon fibers, strength for 4-5.3CNdtex, and an elongation of 18% -45% at 10% elongation elastic recovery rate of more than 90%. Nylon strongest strength in the fibers, it was determined nylon fiberwear-resistant cotton fibers 10 times, 50 times that of viscose, wear resistance ranking the first of a variety of fiber are pressed together system ideal material for car tires and rubber nylon dimensional alkali resistance, weak acid, at 95 ° Cstrength loss with Nao (10%) after treatment 16h ignored meter, but nylon lightfastness easily discolored crisp, nylon fabric should not be long-term exposure to sunlight.