... aviation, aerospace,naturai-gas,minerai oil,iron-steel desulphurization,defence industry,metallurgy and so on .Appearance of Mg Powder(Granules): A ... -50mesh(0.6-0.3mm) for chemical industry. C.-100 mesh,-150 mesh,-200 mesh for ariation, aerospace, miltary industry. Mg (%)Fe (%)Si (%)Al ...