... 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:≥ ... elastic, long stretch, low specific gravity2, high elastic recovery, high elastic modulus, high strength 3, high temperature resistant4, ISO 90001,oeko-Tex ...