The secondary ingredients comprise {HEAD ~ 0.02 0.10 wt % part SiO2} and 0.01 0.03 wt part Al2 O3 with {TAIL ~ respect} to 100 wt parts of the primary ingredients, with the weight ratio of SiO2 to Al2 O3 being from 1.5 to 5.0 
with
The secondary ingredients comprise { HEAD ~ 0.02 0.10 wt % part SiO2 } and 0.01 0.03 wt part Al2 O3 with { TAIL ~ respect } to 100 wt parts of the primary ingredients , with the weight ratio of SiO2 to Al2 O3 being from 1.5 to 5.0
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH