Mixing direct dye pansy with blue, fishing out the optimal technology of mixing colors. Guiding production and increasing the brightness of paper.
采用直接染料紫罗兰和蓝色混合，摸索最佳调色工艺，指导生产，提高纸的白度。
Mixing direct dye pansy with blue, fishing out the optimal technology of mixing colors. Guiding production and increasing the brightness of paper.
采用直接染料紫罗兰和蓝色混合，摸索最佳调色工艺，指导生产，提高纸的白度。
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