Shanghai Lisan cashmere and platinum cashmere, cashmere is good. Cashmere is good and clothes are good. Cashmere refers to sheep hair. Cashmere and sheep hair belong to keratin in chemical composition, but their organizational structure and physical properties are different. Shanghai Li San Bai Jin cashmere and Shanghai Li San Bai Jin cashmere are both good. It has good warmth retention and hygroscopicity. The fluff has a diameter of 14- 17 micron and a length of 30-45 mm.