800一体空气包纱（空包氨纶包覆纱） 800一体空气包纱技术能够将所有规格型号的长丝直接加工成为经济的弹性纱线（比普通机包、空包少一道工序，减少每公斤2--3元成本），产品具有极高的感与柔软性， 可应用于袜子和无缝内衣，圆机，毛衫等 种类：涤纶包纱、锦纶包纱 规格：多种 颜：各种颜 Air-covering technology can make all types of filaments into economic and good quality elastic yarns, which are highly soft and exquisite, can be widely used in hosiery and seamless underwear. Costitution: Spandex+Nylon, Spandex+Polyester Application：seamless knitting, seamless underwear,woven fabrics,sweater,elastic band Specification: usual specifications are 20D/70D,30D/70D,40D/70D,30D/75D,40D/75D,40D/150D，20D/40D,20D/30D,20D/50D,140D/70*2, 210D/70D*2. We can also make customized specificati
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