... been sintered under 1700°C with the main raw material of Al2O3 and flux of rare metal oxide.Using the high strength organic ... 4.Hard adhesived,good heat-resistant.Main applications:The exterprises of Eletricity ,steel,smelt,mechanism,colliery,mine,chemical,cement,oil field ... for the wearable mechanical instruments that works in the system of coal transfer,material transfer,milling,dust removing,and so ...