Rabbit hair is composed of keratin, and both the villi and coarse hair have a medullary layer. The hair pulp of the villi is in a single row intermittent or narrow block shape, while the hair pulp of the coarse hair is wider, in a multi row block shape, containing air. The fibers are slender, pure white in color, with good luster, soft and fluffy, and strong warmth retention. However, the fibers have less curl, a smooth surface, poor adhesion between fibers, and low strength. The fine hair is 15.9-27.4 cN/tex, and the coarse hair is 62.7-122.4 cN/tex, with an average elongation at break of 31% -48%. The reaction to acids and bases is roughly the same as that of wool. Pure spinning of rabbit hair is difficult, and it is mostly blended with other fibers, which can be used for knitwear and woven fabrics. Rabbit hair is very soft and warm to wear in winter. Generally, people who are allergic to sweaters will not be allergic to rabbit hair. Sweaters made from rabbit hair on the market are not very expensive and the price is reasonable. However, it reminds consumers that there is a significant difference in the softness between fake and real rabbit hair. This document specifies the technical requirements, test methods, inspection rules, packaging, and labeling of rough combed rabbit hair fabrics. This document is applicable to the identification of the quality of various types of woven and worn coarse combed pure rabbit hair, rabbit hair blends, and rabbit hair mixed fabrics (rabbit hair content should not be less than 30%). Release Department: Ministry of Industry and Information Technology of the People's Republic of China Release Date: April 8, 2022 Implementation Date: October 1, 2022 Test items for fine wool, short wool rate, average length, average diameter, loose wool rate, coarse wool rate, impurity content, and public moisture regain

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