| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White crystalline powder | Conforms |
| Loss on drying | ≤2.50% | 1.23% |
| Sulfate(SO4) | ≤0.60% | 0.12% |
| Heavy metals(Pb) | ≤0.04% | 0.005% |
| Assay | ≥57.0% | 57.50% |
| Conclusion: The Product Conforms to Enterprise Standard. |
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