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| country of origin: | Hebei Lingshou |
|---|---|
| Silica content: | 99（%） |
| Melting point: | 1750（℃） |
| Mohs hardness: | 7 |
| Density: | 2.35（g/cm3） |
| Silicon content ≥: | 99 |
| Product Name: | Hengyan |
| Grain size: | 325 |
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