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| Testitems | Index | |
| Exterior | White crystalline | |
| Nitrogen ??? | ≥ | 21 |
| Water(???2???) ??? | ≤ | 0.2 |
| free carbonicacid (H2SO4)??? | ≤ | 0.03 |
| Iron(Fe) ??? | ≤ | 0.007 |
| Arsenic(As) ??? | ≤ | 0.00005 |
| Heavy metal(pb) ??? | ≤ | 0.005 |
| Waterinsoluble matter ??? | ≤ | 0.01 |
| Packaging:25kg???50kg???1000kg Weaving. |


