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地址：武汉市江岸区后湖大道汉口城市广场C区3号楼1013
网址：www.zoyochem.com
| ITEM | STANDARD |
| Assay(on the dried base) | min. 98.0% |
| Loss on drying | 19.0 %-23% |
| Flouride | max.0.003% |
| Arsenic (As) | max. 2 mg/kg |
| Lead (Pb | max. 2 mg/kg |
| Selenium | max. 0.003% |
| Heavy metals | max. 10 mg/kg |
