The characteristics of polyester silk are that it can resist chemicals and be washed frequently, reducing the fading and decolorization of clothes, so hotel uniforms, stone blue denim clothing, sportswear or children's clothing will be made of polyester yarn. Comparatively, polyester yarn is tougher than rayon. When embroidery, the machine is running at high speed, and the polyester thread with high toughness can also withstand large tensile force; And it is extremely fire-resistant; Even if the clothing is close to the flame, it is not easy to touch the fire.