The crude salt obtained after evaporation is dissolved, precipitated, then filtered and evaporated to obtain refined salt, and finally other elements are added according to the needs of the actual situation.

1, natatorium. Nachao is actually the raw material extraction process for the production of raw salt. Seawater is the raw material of salt production, in order to ensure the normal production, we must do everything possible to ensure the supply of raw materials.

2, halogen production. Brine concentration gradually increased, and finally concentrated into saturated brine.

3, crystallization. When the concentration of salts reaches saturation, can be precipitated in the form of crystals.

4, salt collection. It is the salt that grows into the salt, the use of artificial or mechanical salt will be put away in piles.