The Ministry of Agriculture's dry sea cucumber (Revised Edition), the People's Republic of China Aquatic Industry Standard, classifies the quality of dry sea cucumber as: super-class, first-class, second-class and third-class.

Extended data:

Dry sea cucumber is a processed product of sea cucumber. Although its nutritional value is not as good as that of fresh sea cucumber, its nutritional components are more easily absorbed by human body than fresh sea cucumber, and it is easy to store and transport, so it is very popular with people and the market.

According to different processing technologies, qualified dry sea cucumber generally refers to salt dry sea cucumber and light dry sea cucumber. Although the state prohibits the sale of sugar dry sea cucumber, sugar dry sea cucumber still has a large market share and is sold semi-publicly.

Generally, there is a knife edge in dry sea cucumber's abdomen. Because sea cucumbers have autolysis characteristics, if they are not treated immediately after being caught, they will melt into liquid by themselves. Therefore, sea cucumber manufacturers will treat the sea cucumbers immediately after they are caught, and the mouth on the sea cucumbers' stomachs is the knife edge left by intestinal removal.

References:

Baidu Encyclopedia-dry sea cucumber