Suppliers with verified business licenses
Audited Supplier 
| Testing Item | Standard | Result |
| Content (on dry basis) | ≥98.50% | 98.80% |
| Specific Rotation | +18.0°~ +21.5° | +20.00° |
| Loss on Drying | ≤1.0% | 0.50% |
| Residue on Ignition | ≤0.3% | 0.20% |
| Dust | ≤0.3% | 0.20% |
| Residue after Burning | ≤0.3% | 0.17% |
| Ammonium Salt | ≤0.04% | 0.01% |
| Heavy Metal(Pb) | ≤30PPM | 20PPM |
| Arsenic(As) | ≤10PPM | 2PPM |
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Suppliers with verified business licenses
Audited Supplier 
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