| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 885.98 | USD | 20250827 |
| Shandong Langchem | China national standards | MT | 884.98 | USD | 20250826 |
| Shandong Langchem | China national standards | MT | 885.32 | USD | 20250825 |
| Shandong Langchem | China national standards | MT | 883.33 | USD | 20250823 |
| Shandong Langchem | China national standards | MT | 883.33 | USD | 20250822 |
| Shandong Langchem | China national standards | MT | 883.75 | USD | 20250821 |
| Shandong Langchem | China national standards | MT | 882.55 | USD | 20250820 |
| Shandong Langchem | China national standards | MT | 882.86 | USD | 20250819 |
| Shandong Langchem | China national standards | MT | 883.32 | USD | 20250818 |
| Shandong Langchem | China national standards | MT | 882.71 | USD | 20250815 |