Newstar ® fiber is an essential "condiments" textile material for modern textile and garment industry with excellent high elongation and resilience. Newstar® spandex could directly be interwoven with other chemical fiber filament for knitting application and be made into covering yarn , core spun yarn ,twisting yarn and other forms with other fibers (cotton,wool,linen,silk,polyester ,nylon etc.) at first with further process for weft and warp knitting and weaving application, manufacturing underwear ,swimming suit,Leisure sports,jeans ,socks,gloves and shoes, almost all textile applications. Aramid and its composite materials are widely used in the key components of power traction, friction braking, body structure, flame retardant interior and other systems of high-speed rail vehicles, high-speed trains, subways and other high-speed rail vehicles, which can effectively improve the safety and comfort of vehicles. performance and service life.