One liter of water is equal to two bottles of mineral water. Mineral water is an unpolluted underground mineral water that naturally gushes out from deep underground or is exposed artificially, which contains a certain amount of mineral salts, trace elements or carbon dioxide gas. In general, its chemical composition, flow rate, water temperature and other dynamics are relatively stable within the natural fluctuation range.

Mineral water can be divided into natural mineral water and unnatural mineral water. Natural mineral water refers to water that naturally gushes out from deep underground or is collected by drilling, contains a certain amount of minerals, trace elements or other components, and is not polluted in a certain area, and preventive measures are taken to avoid pollution. Due to the supersaturation of calcium and magnesium in mineral water during freezing, white precipitate will be produced with the decomposition of bicarbonate, especially for mineral water with high calcium and magnesium content and salinity greater than 400mg/L, white flake or granular precipitate will appear after freezing.