3N5 High Purity Super-fine Silicon Powder 1500mesh 2500mesh 5000mesh Packing: Steel drum, ... 200kg/drum or 250kg/drum 3N5 High Purity Super-fine Silicon Powder Formula: SiAppearance: Metallic greyParticle: 1500mesh, 2500mesh, ... titanium alloy, silicon aluminum alloy and other alloys), organic silicon, ceramic industry, electronics ,military industry, chemical industry, optical fiber and ...