Developed under Shandong Province’s Key R&D Program (2023), this series achieves fiber coloring during the spinning process, subverting traditional dyeing technologies. It improves dye utilization rate, optimizes dyeing efficiency, and significantly reduces wastewater discharge—achieving a greener production process. Currently, multi-color products in medium and light shades are available with color fastness reaching Grade 4, widely used in infant and children’s wear, underwear, home textiles, and apparel.