1, agar, scientific name agar, English name (agar), also known as the oceanic vegetables (agar-agar), Haidong vegetables, frozen powder, agar, stone flower glue, swallow vegetable essence, the ocean powder, cold days, large vegetable silk, is a kind of plant glue, commonly used in the sea of the unicorn vegetable, stone flowers, Gracilaria, etc. made of colorless, non-fixed shape of the solid, soluble in hot water. It is widely used in the food industry and is also commonly used as a bacterial culture medium.

2, agar, is extracted from seaweed polysaccharide, is one of the world's most widely used seaweed gum. It has a wide range of applications in the food industry, pharmaceutical industry, daily chemical industry, bioengineering and many other aspects, agar used in food can significantly change the quality of food, improve the grade of food. The price is very high. It is characterized by coagulability, stability and other physicochemical properties, can form complexes with some substances, can be used as a thickener, coagulant, suspending agent, emulsifier, preservative and stabilizer. It is widely used in the manufacture of granular orange and various beverages, jelly, ice cream, pastry, soft candy, canned food, meat products, porridge, silver ear bird's nest, soup food, cold food and so on. Agar in the chemical industry, medical research, can be used as culture medium, ointment base and other uses.