The Characteristics of polyester yarn: High strength, good impact resistance, heat resistance, corrosion resistance, moth resistance, acid resistance, very good light resistance (second only to acrylic fiber), 1000 hours of exposure, strong maintenance of 60-70. Uses of polyester yarn: 1. Filament: often used as low elasticity yarn to make various textiles 2. Short fiber: cotton, wool, linen, etc. can be blended 3. Industrially used: used in tire cords, fishing nets, ropes, filter cloths, insulating materials, etc.