Bismuth Oxide and Cobalt Powder (YG-3)

Bismuth powder: Bi>=99.99% 80-600mesh Bismuth Oxide Bi2O3>=99.8% Na<=0.01% Fe<=0.01% Ca<=0.01% Al<=0.01% P<=0.005% Cu<=0.005% K<=0.005% Diameter: D50um<=1.0-5.0　　 color: light yellow g/cm3:1.5-2g/cm? Cobalt powder: (1) 99.5% Co: >=99.5% Ni :0.008% Cu: 0.003% Fe: 0.013% (2)60-65% Co: 60-65% Ni: 17-17.5% Cu: 0.8-1.0% Fe: 17-19.5%