Many friends may have eaten duck products of brands such as Jiujiu Duck and Zhou Heiya or spicy duck products of self-employed. Besides duck head, duck neck, duck esophagus, duck intestines, duck collarbone, duck wings, duck tongue and duck feet, there are also spicy series of yuba, beans, lotus root slices, little seafood, tripe, fish tofu and potato chips that can be made into duck products, which are very delicious.

Some people may feel good after eating, and they have an impulse to open their own stores or set up stalls. But the snack industry is more than just technology. There are too many things to learn, such as the choice of ingredients, the preservation of ingredients, the promotion of shops and so on.