Salt is made by evaporated seawater method, mining method, salt chemical synthesis method and so on.

1, Evaporated Sea Water Method

Sea water is collected in large ponds or tanks, and then the water is evaporated using solar or thermal energy, ultimately leaving salt at the bottom. This is one of the oldest and most common ways of producing salt.

2. Mining Method

Salt can be mined from underground salt mines and then subjected to steps such as crushing, washing, sifting and processing to remove impurities and produce different quality levels of salt.

3. Salt chemical synthesis method

This method uses chemical methods to synthesize salt. The most common method is to prepare table salt by reacting sodium chloride with other chemicals such as sodium hydroxide or sulfuric acid.

Taboos for storing salt:

1. Keep it sealed. Salt is absorbent, if it absorbs water, it will turn into mud paste, so it should be sealed and stored.

2, avoid moisture. Salt is absorbent, so it should be stored in a dry place to avoid moisture.

3. Protect from the sun. Salt decomposes when heated, dehydrates easily when heated, and melts when the temperature rises, so it should be stored out of the sun.

4, fire. Salt is easy to catch fire when exposed to fire, so store it away from fire sources.

5, anti-poisoning. Industrial salt may contain nitrite, ingested after the harm to the body, so the storage of salt should be anti-poisoning.

6, avoid contact with hot items. Salt should not be placed in hot water or hot places, because high temperatures can cause salt decomposition.

7. Avoid contact with acidic substances. Salt shouldn't come into contact with acidic substances because acidic substances can react with salt and cause deterioration.

8. Place it in a high place. To avoid accidental ingestion of salt by children, it should be placed in a high place.