Polyester Partially Oriented Yarn

M400 by high viscosity of PBT and low viscosity PET composite spinning Is a kind of composite elastic fiber, have permanent spiral curls and excellent fleeciness and elasticity recovery, color fastness and soft hand touch.  It solves the problem that Spandex yarn is not easy to dye, elastic surplus, fabrics size is not stable, and easy ageing, and can be directly use on water jet, air jet loom.