Table salt refers to sea salt, well salt, mineral salt, lake salt, earth salt, etc. from different sources. Their main ingredient is sodium chloride, and the state stipulates that the sodium chloride content of well salt and mineral salt shall not be less than 95%. Table salt contains barium salt, chloride, magnesium, lead, arsenic, zinc, sulfate and other impurities. We stipulate that the barium content should not exceed 20mg/kg. Too much magnesium and calcium content in table salt can make the salt bitter, and too high fluoride content can also cause poisoning. In recent years, many experiments have confirmed that there is a certain relationship between the intake of salt and the incidence of hypertension. Excessive intake of salt in the diet can cause hypertension. The World Health Organization (WHO) recommends that each person consumes less than 5g of salt per day to prevent coronary heart disease and high blood pressure. my country stipulates that the daily intake of 7g of salt for adults can meet the body's need for sodium.

Salt is a must for every family. People cannot but eat salt. Although we advocate eating less salt, it is for health. However, large quantities of industrial salt have been warned that the processed packaging has become "table salt", which is used by unscrupulous traders for huge profits. This kind of salt is extremely harmful, and iodine-deficient salt will affect human metabolism, damage the nervous system, and intellectual development.

The advantages of salt packaging: prevent pollution, facilitate storage and transportation (not decompose during shelf life, and have a certain strength and shape), non-toxic, compatible with salt, and no interaction. Starting with the materials of sodium chloride and iodine, it must comply with food packaging safety regulations, and bag packaging can reduce labor costs and improve production efficiency. It is the main packaging form of domestic salt industry enterprises.