Hundreds of saltwater evaporation ponds cover the south bank of Laizhou Bay in Shandong Province, East China. After being pumped to the surface from underground brines, salts are dried in these ponds and used to produce a variety of organic and inorganic chemicals and food additives. This particular area has China’s largest production capacity for bromine, an element found in seawater that is used in agricultural chemicals, pharmaceuticals, flame retardants and more.