Based on the above characteristics, industrial fermentation has attracted more and more attention. Compared with the traditional fermentation technology, the modern fermentation engineering has more advantages in addition to the above characteristics.

Purple sweet potato is now respected as a relatively healthy food, mainly because it contains some trace elements, and high fiber, which makes it more respected by some people now. In fact, strictly speaking, purple potato can be used as a staple food to eat, but compared with some other green vegetables, dark vegetables, the calories are higher.

In fact, we can think of it as a carpet. Then, we planted the hair on the carpet. Finally, the material of the carpet is pp (polypropylene).