| Vendor | Spec | Unit | Price | Currency | Date |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 224.87 | USD | 20250926 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 225.17 | USD | 20250925 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 225.17 | USD | 20250925 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 225.17 | USD | 20250924 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 225.17 | USD | 20250924 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 225.17 | USD | 20250923 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 225.17 | USD | 20250923 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 225.02 | USD | 20250922 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 225.02 | USD | 20250922 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 224.95 | USD | 20250919 |