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+86 10 64640086
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| Composition | commongrade | super grade |
| MgO | >63% | 65% |
| TFe2O3 | <0.4% | 0.3% |
| siO2 | <3% | 2.5% |
| CaO | <2.5% | 1.5% |
| Al2O3 | <0.20 | 0.2% |
| H2O | 27-31% | 28-31% |
联系电话：+86 10 64640086
传真：86-10-84552201 84512245
Mail：grc@grand-resources.com.cn
地址：Beijing Office Rm.1810 Golden Land Building.No.32 Liang Ma Qiao Road. Chaoyang District,Beijing 100016 China
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