According to Baidu Encyclopedia, silk-like cotton is also a very good warm-keeping material, which can replace down and plant cotton as clothing fillers. It was first developed by Beijing Chengling Textile Products Co., Ltd. around 1993. Silk-like cotton is made of superfine hollow short fibers containing silicon as the main raw material and some short fibers with heat capacity. The rubber content of the finished product is very small. After calendering and ironing, the surface of silk-like cotton is smooth It has the characteristics of mercerization, lightness, delicate feel, softness, good thermal insulation, strong washing resistance, difficult deformation, no silk running, down-like feel, delicate texture, silky surface, large tensile force and softness. And it will not be deformed after repeated washing by the washing machine. It is a suitable filling material for washing and sand washing clothes, suitable for high-grade cold-proof clothes, soft fabric clothes, bedding and high-grade winter fashion, and is a substitute for down as filler.