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| Item | Specifications |
| Assay（no H2O） | 12～13% |
| Zinc content | 12～13% |
| pH | 5.5～7.5 |
| Loss on drying | ≤11.6% |
| Sulfate | ≤0.05% |
| Chloride | ≤0.05% |
| Reducing sugar | ≤1.0% |
| Lead | ≤0.001% |
| Cadmium | ≤5mg/k |
China 
