Magnesium is primarily used in production of Magnesium alloys, which are used in making die cast parts for the automotive industry. It is also used as a desulphurizing agent in the production of steel. Magnesium is also used as a minor alloying element in the production of aluminium alloys. China is the biggest producer of Magnesium ingots, where it is primarily produced by Electrolysis from dolomite.