Large grain salt is just ordinary salt.Ordinary salt includescoarse saltand solar refined salt.Coarse salt refers tosea or lake saltproduced in the original salt fields.Solar refined salt, referring to China's southern coastal salt areas, is made according to high temperatures and frequent rainfall. They use new brine, thin evaporation, short-term crystallization, and regular movement of brineand salt residueto produce fine salt with uniform grains.Refined salt,also known as processed salt, is made from refined brine using underground natural brine or brine obtained by rock salt water extraction. It removes soluble impurities through chemical methods, clarifies it, and then undergoesevaporation, crystallization, dehydration, drying, and screening.Salt mines produce refined salt using underground natural brine or brine from rock salt water extraction.In the selected refined salt,after adding appropriate anti-caking agents and mixing evenly, it becomes refined salt.Refined salt contains no impurities.