We have been supplying fertilizers to all over the world for many years. Below are the most popular types we have supplied into Australian market. Mag Oxide Purity 87% and 70% for choice. Magnesium Sulphate Heptahydrate-9.7% MgCalcium Ammonium Nitrate-15.5% N, 18.5% Ca. Potassium Nitrate 13%N, 38.2% K. Sulfamic acid Purity 99.5%.