The vermicelli in Haidilao is crystal powder, which means vermicelli with good transparency. Crystal powder is a Japanese jelly powder, which is mainly composed of carrageenan, sodium alginate, agar gel, pectin and other plant gels. It can be dissolved slowly in cold water and also in hot water.

The amount of cold flour (crystal powder) accounts for 0.8% ~ 1.0% of the total frozen food. Crystal powder is made of high-quality natural crystal stone with high silica content and low impurity content. It can be used as raw materials for optical fiber, time glass, quartz tube, time bar and time crucible, and used in optical communication, lighting, semiconductor and other industries.