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Nanometer pearl powder refers to pearl powder with average particle size less than 100 nanometers.The diameter of nanometer pearl powder was determined by TEM.Pearl powder is a powdery substance made from pearls produced by Hyriopsis cumingii (Lea), Cristaria plicata(Leach), Pteria Martensii (Dunker) and other shellfish.White or white, with a special fishy taste of pearl.

Dipotassium glycyrrhizinate is a white or off-white fine powder with a purity of 98%, a special sweet taste, good water solubility and pure taste. It is widely used in cosmetics, chemical industry, food and other industries.

Resveratrol, a non-flavonoidal polyphenolic organic compound, is an antitoxin produced by many plants when they are stimulated, with the chemical formula C14H12O3. It can be synthesized in grape leaves and skins, and is a biologically active ingredient in wine and grape juice. It is readily absorbed orally and metabolized and excreted through urine and feces. In vitro experiments and animal experiments show that resveratrol has antioxidant, anti-inflammatory, anti-cancer and cardiovascular protection effects.