... short time processing, little dropping of molten iron temperature. over 99% Pure Magnesium Powder:Using the high technology, the ... of 2mm-0.0035mm(10-400meshes), magnesium content of over 99.5% and loose thickness of 0.1-0 ... 1-2004 of China and has the active magnesium of over 98.5%, and foreign matters of Zn<0.1 ... silicon, and casting of metallurgical powder as well. over 99% Pure Magnesium Powder