如果把红色和蓝色混合在一起，你可能永远也得不到格外漂亮的紫罗兰色。
Combining red and blue, you will probably never get a fantastic violet.
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.
蓝色和黄色相混合就是绿色。
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