"Freeze-dried powder" is a sterile powder for injection, which is made by freezing the liquid medicine into a solid state in a sterile environment and vacuumizing, subliming and drying the water. Its form is pure solid.

Freeze-dried powder is a highly active substance, which has a significant effect on skin repair and skin resistance.

Freeze-dried products are loose in shape and basically do not change color after drying. After adding water, they can be dissolved quickly and restore the physical and chemical properties and biological activity of the original aqueous solution.