Narrow particle size distribution , high polishing efficiency，no scratch.
| Varieties Spec. | Ⅰ | Ⅱ | Ⅲ | Ⅳ |
| D50,μm | 3.5-4.0 | 1.700-1.900 | 0.900-1.100 | 0.200-0.300 |
| D99,μm | ≤20 | ≤4.500 | ≤3.500 | ≤3.500 |
| APS,μm | ≤4.8-5.2 | ≤1.500-1.800 | ≤0.900-1.100 | ≤0.400-0.800 |
