| Grade | Composition | |||
| Si | Impurities(%) | |||
| Fe | Al | Ca | ||
| ≤ | ||||
| 553 | 98.7min | 0.5 | 0.5 | 0.3 |
| 441 | 99.1min | 0.4 | 0.2 | 0.1 |
| 421 | 99.3min | 0.4 | 0.2 | 0.1 |
| 411 | 99.4min | 0.4 | 0.1 | 0.1 |
| 3303 | 99.37min | 0.3 | 0.3 | 0.03 |
| 2502 | 99.48min | 0.25 | 0.25 | 0.02 |
| 2202 | 99.58min | 0.2 | 0.2 | 0.02 |
| 1501 | 99.69min | 0.15 | 0.15 | 0.01 |
| 1101 | 99.79min | 0.1 | 0.1 | 0.01 |
Size: 10-50mm, 50-100mm or as customers' requirements. | ||||
| Composition | |||
| Si | Fe | Al | Ca |
| 97%min | 1.5%max | 0.6%max | 0.3%max |
| 1.5%max | 0.8%max | 0.35%max | |
| 1.8%max | 1.0%max | 0.5%max | |
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