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Characteristics of pure cotton and polyester cotton. Under normal conditions, the fiber can absorb moisture from the surrounding atmosphere, and its moisture content is 8-10%.
Pure cotton, the clothing is made of natural cotton fiber. Generally, there is a label written [cotton] /Cotton/C. Pinch it down with your hands. If it is wrinkled. It is pure cotton. The surface of pure cotton will be the noodles after burning, otherwise it will be a hard black thing with oil drops (lumps).