| Vendor | Spec | Unit | Price | Currency | Date |
| Nanjing Baitu Chem | China national standards | MT | 843.16 | USD | 20250825 |
| Nanjing Baitu Chem | China national standards | MT | 841.27 | USD | 20250822 |
| Nanjing Baitu Chem | China national standards | MT | 840.52 | USD | 20250820 |
| Nanjing Baitu Chem | China national standards | MT | 841.26 | USD | 20250818 |
| Nanjing Baitu Chem | China national standards | MT | 840.68 | USD | 20250815 |
| Nanjing Baitu Chem | China national standards | MT | 840.93 | USD | 20250813 |
| Nanjing Baitu Chem | China national standards | MT | 840.12 | USD | 20250812 |
| Nanjing Baitu Chem | China national standards | MT | 840.28 | USD | 20250811 |