TinOxide(SnO2)Nanometerpowder99.9%99.99%3NSnO299.9%,ImpurityMaxeachSb/Fe0.0015%,Bi/Pb0.01%,As0.001%Specificsurfacearea:10-30m2/gBulkdensity0.1-0.8g/cm3Size:50-70nm4NSnO299.99%,ImpurityMaxeachAl0.0003%,Mg/Cu/Ag0.0002%,Ca/Si/Fe0.0005%,Zn/Pb/Ni/Mo/Zr0.0001%BET5.7m2/g(&plu***n;0.5)Size:20-70nmormicrongrade***ailablePacking:inplasticbag,cardboarddrumoutside.)