... AA grade with ISO90001, oeko-Tex standard 100, SGS certificates.Spandex yarn tech parameterElongation at break :710±30%Tension at break:≥98CNStress ... , high elastic modulus, high strength 3, high temperature resistant4, ISO 90001,oeko-Tex standard 100, SGS certificates5. 20D, 30D, 40D, 70D, 140D, 210D, 840D, 280D ...