| TESTING ITEMS | SPECIFICATIONS | RESULTS |
| Appearance | White crystals powder | Conforms |
| Melting point | 129℃~133℃ | 130℃ |
| Loss on drying | ≤5.0% | 2.6% |
| Heavy metals | ≤0.002% | 0.001% |
| Assay (Zinc) | 23.0%~26.0% | 25.3% |
| Particle size | 0.25mm test sieve ≥95.0% | Conforms |
| Conclusion: The Product Conforms to Enterprise Standard. |
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