Cashmere is the fluff obtained from cashmere goats and cashmere goats, and it is a precious textile raw material. The diameter of cashmere fiber is smaller than that of fine wool. The average diameter of cashmere in China is 14.5 ~ 16um, and the average length is 35 ~ 45 mm.

Cashmere is mostly produced in China, Inner Mongolia, Xinjiang, Liaoning, Shaanxi, Gansu, Shanxi, Ningxia, Tibet, Qinghai and other places. Its annual output accounts for about 50% of the world's total output, ranking first in the world and with the best quality. Cashmere products are mainly fine, light, soft, warm and slippery. The cashmere sweaters, cashmere coats, cashmere tweed and other textiles are all high-grade and precious commodities, which are exported in large quantities and are well received by the international market.