1.specification:20-60 mesh (size :0.850-0.224mm) 2.Purity: 92%~95% 3.Loose thickness:0.1-0.75g/cm3 4.Liaoyang Guoxing Passivated Spherical Magnesium Powder 5.We are manufacturers who sell magnesium powder,passivated spherical magnesium powder,magnesium chips,magnesium butt ends,Black SiC Ball and so on. 6.ISO9001:2000 International Quality Control System Authentication