| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langchem | China national standards | MT | 394.32 | USD | 20250909 |
| Yankuang Guotai Chem | China national standards | MT | 337.89 | USD | 20250908 |
| Jiangsu SOPO | China national standards | MT | 351.97 | USD | 20250908 |
| Jiangsu SOPO | China national standards | MT | 351.97 | USD | 20250908 |
| Shandong Langchem | China national standards | MT | 394.21 | USD | 20250908 |
| Chizhou Xinyu Chem | China national standards | MT | 379.94 | USD | 20250906 |
| Yankuang Guotai Chem | China national standards | MT | 337.72 | USD | 20250906 |
| Hebei Chuangde Tech | China national standards | MT | 386.98 | USD | 20250906 |
| Shandong Langchem | China national standards | MT | 365.87 | USD | 20250906 |
| Shandong Langchem | China national standards | MT | 386.98 | USD | 20250906 |