spandex covered yarn 1)ISO90001, oeko-Tex standard 100, SGS 2)AA grade 3)white color 4)20D-1120D spandex covered yarnWe can produce ... spandex yarn at AA grade with ISO90001, oeko-Tex standard ... 100, SGS certificates.Spandex yarn tech parameterElongation at break :710±30%Tension at break:≥98CNStress ...