Yarn-Dye is pre-dyed yarn. Lipolong is committed to researching and developing soft roll yarn for dyeing. By purchasing the latest false twisting equipment and modifying equipment design, pre-dyed yarn (soft roll yarn) can achieve the best appearance and can accurately control the density uniformity of the inner and outer layers, reducing customer costs and improving the quality of dyed products.

-Fast fastness: Washing test, water fastness test, perspiration test, abrasion test, sunlight test

-Phenolic yellowing resistance test