7070 SPANDEX/PA6 CONVENTIONAL SINGLE COVER YARN (SCY) FOR NARROW WEAVING. DRAFT ... service. We are the only spandex yarn producer in China with denier 10D, 15D, 20D, 30D, 40D, 70D, 140D ... regular ACY yarns are mainly 40D or 70D spandex with polyester or nylon. Our product can be used ... immediate support. 7070 SPANDEX/PA6 CONVENTIONAL SINGLE COVER YARN (SCY) FOR NARROW WEAVING WITH 3.5 DRAFT AND 500-600TPM ...