| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun | China national standards | MT | 421.77 | USD | 20250919 |
| Chizhou Xinyu Chem | China national standards | MT | 407.72 | USD | 20250919 |
| Yankuang Guotai Chem | China national standards | MT | 351.48 | USD | 20250919 |
| Hebei Chuangde Tech | China national standards | MT | 386.63 | USD | 20250919 |
| Shandong Langchem | China national standards | MT | 365.54 | USD | 20250919 |
| Shandong Langchem | China national standards | MT | 351.48 | USD | 20250919 |
| Shandong Langchem | China national standards | MT | 386.63 | USD | 20250919 |
| Shandong Langchem | China national standards | MT | 393.66 | USD | 20250919 |
| Shanghai Huayi | China national standards | MT | 421.77 | USD | 20250919 |
| Shandong Zhiheng | China national standards | MT | 365.54 | USD | 20250919 |