1, the main raw material of crystal balls in cold weather is seaweed gum, which has obvious advantages in thickening, stability, gelation, shape retention and film formability, and has unique health care function, and is often used as the main raw material of skin care cosmetics.

2. The word Kanten is used in Japan, because in the winter of Edo period, it was found that dried seaweed placed outdoors had the characteristics of coagulation, so it was named "Kanten", which is also called "Agar" or "agar" in traditional Chinese medicine in China, meaning beautiful coagulated fat.