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金剛砂
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Product yield：3000mt / year
producers：Jining Canal Emery Co.,Ltd.
Physical and chemical indicators: Implementation of standards（GB/T7986-2001）
| Item | Unit | Value |
| AL2O3 | % | 44.0-49.0 |
| ZaO2 | % | 33.0-39.0 |
| SiO2 | % | 16.0-19.0 |
| Particle size | mm | 0-0.212 0.212-0.59 1-3 |
