1, the types of salt are sea salt, well salt, mineral salt, lake salt, earth salt. Their main ingredient is sodium chloride, the state regulations well salt and mine salt sodium chloride content shall not be less than 95%. Table salt contains barium salt, chloride, magnesium, lead, arsenic, zinc, sulfate and other impurities.

2, sea salt: sea salt is seawater (some in the north with underground brine) as raw materials made of salt. Seawater through the tide into the evaporation pool, the sun evaporation and concentration made of saturated brine, in the crystallization pool to continue to evaporate and crystallize, and then after artificial or mechanical salt collection, heap to complete the production. Sea salt is low in sodium chloride, contains a variety of trace elements needed by the human body, and does not add any anti-caking agent.

3, well salt: through the drilling of wells to extract underground brine made of salt is called well salt.

4, mineral salt: mineral salt, as the name implies, is from the salt mine to salt, like rock salt in the desert, Sichuan's Sichuan salt, Poland from hundreds of meters underground mining salt, mineral salt is rich in minerals.

5, lake salt: lake salt generally refers to green salt. Green salt, is a halide type rock salt family lake salt crystals, is directly extracted from the salt lake salt and salt lake brine as raw material in the salt field in the tanning system made of salt. Mainly contains sodium chloride, secondary trace elements of silicon, iron, aluminum and macroelements calcium, magnesium, and a small amount of trace elements of manganese, titanium, strontium.

6, earth salt: the Qing dynasty in Shaanxi and Zhili Xuanhua, Xining County, Shanxi Taiyuan, Xugou County and Gansu Gaolan County and other places of production of salt, only in the local sales, known as earth salt. After the Mongolian flag salt, there are also transported and marketed in the region of Shanxi food salt of the earth.