Fiber grade PET chips are high-quality polymer polycondensation products with excellent heat resistance, light resistance, and chemical stability. Also known as yarn grade or textile grade PET chips, they are primarily used in producing polyester filament yarns such as POY, FDY, and staple fibers. These chips are widely applied in spinning various polyester staple fibers and filaments for nonwoven fabrics, polyester roofing carrier and geotextiles.