长期供应 麻棉弹力纱 尼龙弹力纱 亚麻弹力纱 粘胶弹力纱 粘胶锦纶弹力纱5S 6S 7S 8S 10S 18S 21S 26S 30S 32S 40S 50S 60S 70S 80S 20D/30D/40D/50D/75D/100D/150D/200D/250D/300D/350D/450D/500D 10F 21F 30F 32F 40F 50F 60F 70F192F质量优.价格合理,质量按国家标准验收。可负责送货上门。