KR-2023 is suitable for high-temperature dyeing processes such as polyester microfiber, polyester/spandex microfiber and polyester/cellulose blending, as well as polyester tightly wound or high-density package yarn dyeing; In particular, it is recommended to solve the problem of color stains and color spots caused by the poor dispersion of disperse dyes such as high fastness turquoise blue and brilliant blue and sensitivity to water quality, even if the dosage is increased, it will not cause the color to be dark.