How many grades of brown fused alumina in China market?
In China Market,there are different grades of brown fused alumina,can be summarized as follows:
| Grade | Al2O3% | 
| A | 95% | 
| B | 85-90% | 
| C | 70-80% | 
| D | 60-70% | 
| E | 50-60% | 
How many grades of brown fused alumina in China market?
In China Market,there are different grades of brown fused alumina,can be summarized as follows:
| Grade | Al2O3% | 
| A | 95% | 
| B | 85-90% | 
| C | 70-80% | 
| D | 60-70% | 
| E | 50-60% |