To dye silk yarn from natural pigments in combination with modaen substances and replacing the new will to let the color of silk yarn is more durable. Because the substance is modaen to nucleotides and color with a color, the color molecule is large. In the Silk yarn and silk yarn, dropped out of the difficulty. So the dye to the sunlight and nutrients passing next to different color result color of silk yarn that is dyed with different sunlight resistant.
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