... national defense.CAF2:97%min,SIO2:0.9%max,S: 0.001max, P:0.004max, FE2O3:0.02max, SIZE:200MESHCAF2:95%min,SIO2:2.2%max,S: 0.001max, P ... :0.005max, FE2O3:0.025max, SIZE:180MESHCAF2:90%min,SIO2:8.9%max,S: 0.015max, P ... :0.005max, FE2O3:0.025max, SIZE:150MESHCAF2:85%min,SIO2:13.5%max,S: 0.0018max ...