... focusing on the manufacture and export of all kinds of alumina, aluminum hydroxide, aluminum ingot, etc.And we have ... more than ten years development.High purity ultra-fine alumina is a kind of white odorless powder, it is ... m2/g)Loose densityg/cm3Impurity elements contents(PPM)≤KNaCaMgFeSiCoNiCuα-AL2O3α99.980.6~0.84~100.3~0.3350202010102010105 ... free to contact us. High-purity ultra-fine alumina powder