亚洲中文字幕无码天然素人,最近中文字幕MV免费高清动漫,99RE久久资源最新地址,色婷婷五月天激情在线播放,另类亚洲日本一区二区,亚洲精品无码mⅴ在线观看

Synthetic fiber is a part of chemical fiber.

Chemical fiber is a kind of fiber with textile properties, which is made of natural polymer or synthetic polymer as raw materials, through the preparation of spinning solution, spinning and post-treatment.

Chemical fiber can be divided into:

1) Regenerated fiber

The production of regenerated fiber is inspired by silkworms' spinning. It is a kind of textile fiber which is made of natural macromolecule compounds such as cellulose and protein, chemical processed into macromolecule concentrated solution, and then spun and post treated.

2) Synthetic fiber is made of synthetic high molecular compound. The commonly used synthetic fibers are polyester, nylon, acrylic, chlorine, vinylon, spandex, etc.