1, pure water: referred to as purified water or pure water, is pure, clean, does not contain impurities or bacteria in the water, is in line with the hygienic standards for drinking water as the raw water, through the electrodialyzer method, the ion exchanger method, reverse osmosis, distillation, and other appropriate processing methods and become, sealed in containers, and does not contain any additives, colorless and transparent! It is colorless and transparent, and can be drunk directly. Space water sold on the market, distilled water are pure water. Sometimes this term is also and chemical laboratory distilled water or rain water common.

2, natural spring water: is the groundwater naturally exposed to the surface of the site, or underground aquifers exposed to the surface of the site. According to the different water flow conditions, can be divided into intermittent springs and regular flow spring. If there is no obvious water flow after the groundwater is exposed to the surface, it is called seepage water. According to the temperature of water flow, springs can be categorized into hot springs and cold springs. Springs can be divided into eight classes according to their flow rate, with Class I springs having a flow rate of more than 100 cubic feet per second (2,800 liters), Class II springs having a flow rate of between 10 and 100 cubic feet per second, and Class VIII springs having a flow rate of less than 1 pint per minute (8 milliliters per second).