There are many natural polymer materials.
Polysaccharide natural polymer materials, such as cellulose, starch, inulin, chitin and chitosan, cotton, hemp (flax, ramie, sisal), etc. In fact, wood should also Calculate.
There are protein-based natural polymer materials, such as collagen and gelatin, silk, spider silk, wool (velvet), rabbit hair, cow hair, camel hair, etc.
There are also natural polymer materials that are neither polysaccharides nor proteins, such as rubber.