Agricultural and industrial raw materials, such as sulfur, are considered strategic products. Sulphur is an odorless, tasteless, polyvalent nonmetal, known mostly for its yellow crystals. It is formed by combining the nonmetals sulphide and sulphate. Among the most widely used chemicals in the world, sulphuric acid is produced primarily from sulphur. Many chemical and manufacturing processes use sulphuric acid as an intermediate. The fertilizer industry also uses sulfuric acid to make phosphate, nitrogen, potassium, and sulphate fertilizers.