1.Every yarn is made of several spun yarns which is
uniform tension.
2.Recilient force of every Dtex(g/10000m) is 3
times than elastics (0.024foece,gram/unit) the Stess and Strain curves is more
smooth. Keeping smooth resiliency force in the effective area (20%-30%
elongation).
3.Wide elongation area. The uniform design
specification of elastic force is from 2.0-4.0 times elongation.