we are factory of pbt yarn,spandex covered yarn, for socks, underwear, knitting fabric, weaving fabric and sweater,export Features:(1)spandex coverd yarn(2)Air-covering or traditional-covering(3)Produced with Japanese-made or Italian-made machinery(4)Draft ratio range:wide(low elasticity,medium elasticity,and high elasticity)(5)In various specifications according to customers' demands. ...