| Vendor | Spec | Unit | Price | Currency | Date |
| Ningbo Zhetie Jiangning Chemical Co., Ltd. | China national standards | MT | 790.07 | USD | 20251031 |
| Ningbo Zhetie Jiangning Chemical Co., Ltd. | China national standards | MT | 790.25 | USD | 20251030 |
| Ningbo Zhetie Jiangning Chemical Co., Ltd. | China national standards | MT | 789.09 | USD | 20251016 |
| Ningbo Zhetie Jiangning Chemical Co., Ltd. | China national standards | MT | 788.79 | USD | 20251015 |
| Ningbo Zhetie Jiangning Chemical Co., Ltd. | China national standards | MT | 788.12 | USD | 20250930 |
| Ningbo Zhetie Jiangning Chemical Co., Ltd. | China national standards | MT | 787.74 | USD | 20250929 |
| Ningbo Zhetie Jiangning Chemical Co., Ltd. | China national standards | MT | 787.05 | USD | 20250926 |
| Ningbo Zhetie Jiangning Chemical Co., Ltd. | China national standards | MT | 788.1 | USD | 20250925 |
| Ningbo Zhetie Jiangning Chemical Co., Ltd. | China national standards | MT | 788.1 | USD | 20250924 |
| Ningbo Zhetie Jiangning Chemical Co., Ltd. | China national standards | MT | 787.56 | USD | 20250922 |